Калькуляторы

Калькулятор Стоимости Топлива

Estimate the gas cost of any trip from distance, fuel economy, and the price per gallon.

Калькулятор Бензина

Figure out what it costs to top off your tank from its current level.

Калькулятор MPG

Compute real miles per gallon from your odometer and gallons pumped.

Калькулятор Скорости

Calculate average speed from distance and time — supports hours and minutes.

Калькулятор Времени в Пути

Estimate driving time including planned rest stops.

Калькулятор Поездок на Работу

Add up gas, insurance, and parking for the full year of commuting.

Калькулятор Стоимости Поездки

Total a road trip budget: gas, hotels, and food, in one shot.

Калькулятор Стоимости Зарядки EV

See what charging your electric vehicle actually costs per month at home rates.

Калькулятор Стоимости Зарядки Tesla

Estimate weekly and yearly home charging cost for your Tesla model.

Калькулятор Амортизации Авто

Estimate your car's current value after years and mileage.

Калькулятор Совместных Поездок

See how much carpooling cuts your annual commute cost.

Калькулятор размера бюстгальтера

Calculate your bra size from band and bust measurements.

Калькулятор утяжелённого одеяла

Find your ideal weighted blanket weight using the 10% rule.

Калькулятор размера скатерти

Find the right tablecloth size for any table and desired drop length.

Калькулятор юбки-солнце

Compute fabric size and waist radius for a full circle skirt.

Калькулятор Стоимости Электричества

Compute the monthly cost of running any appliance from wattage and use.

Калькулятор Расхода Краски

Estimate how many gallons of paint your room needs.

Калькулятор Напольного Покрытия

Compute square footage and material needed including waste factor.

Калькулятор Плитки

Count tiles needed for any room with waste built in.

Ипотечный Калькулятор

Estimate monthly payments including principal, interest, taxes, and insurance.

Solar Panel Savings Calculator

Estimate annual savings and payback period for a residential solar install.

Калькулятор BTU Кондиционера

Find the BTU rating you need to properly cool a room.

Калькулятор Чаевых

Compute the tip and per-person split for any bill.

Калькулятор Скидки

Find the sale price and savings for any percent off.

Зарплата в Почасовую

Convert an annual salary into an hourly rate.

Почасовая в Зарплату

Convert an hourly wage to monthly and annual income.

Калькулятор ROI

Compute return on investment and annualized return.

Калькулятор Маржи Прибыли

Compute gross profit and margin from revenue and cost.

Калькулятор Ставки Фрилансера

Work out the hourly rate you need to charge to hit your income goal.

Калькулятор Pomodoro

Plan focus blocks and breaks using the 25/5 pomodoro technique.

Калькулятор Сверхурочных

Compute weekly pay with overtime at 1.5x past 40 hours.

Калькулятор Стоимости Встречи

Calculate what a meeting truly costs in payroll dollars.

Калькулятор Возраста

Calculate exact age in years, months, and days from any date of birth.

Дней до Рождества

How many days, hours, and minutes are left until Christmas Day?

Калькулятор Цикла Сна

Find optimal wake-up or bedtime based on 90-minute sleep cycles.

Предполагаемая Дата Родов

Estimate your due date and current pregnancy week from your last period.

Калькулятор Рабочих Дней

Count working days (Mon–Fri) between any two dates.

Подбрасывание монеты

Flip a virtual coin — heads or tails, fair random.

Бросок кубика

Roll any combination of D4, D6, D8, D10, D12, D20, or D100.

Генератор случайных чисел

Generate random numbers in any range, with or without duplicates.

Генератор да или нет

Let randomness decide. A fair coin flip with words.

Калькулятор знака зодиака

Look up your Western astrological sign from your date of birth.

Калькулятор любовной совместимости

Just-for-fun compatibility score from two names.

Калькулятор стоимости душа

Compute the yearly cost of your showers in water and energy.

Калькулятор солнцезащитного крема

How much sunscreen you actually need per day at the beach.

Калькулятор времени чтения

Estimate how long a book or article will take to read.

Калькулятор скорости аудиокниги

See how much time you save listening at higher playback speeds.

Калькулятор ИМТ

Body Mass Index from height and weight, with the standard category breakdown.

Калькулятор Калорий

Estimate daily calorie needs via Mifflin-St Jeor BMR and activity multiplier.

Калькулятор Потребления Воды

Estimate your daily water target adjusted for activity and climate.

Шаги в Мили

Convert step counts to miles using your stride length or height estimate.

Калькулятор Процентов

Solve any percentage question: X% of Y, X is what % of Y, percent change.

Калькулятор Площади

Compute area for rectangles, circles, and triangles in square feet.

Инструмент Римских Цифр

Convert any number 1–3999 to a Roman numeral and back.

Двоичное в Десятичное

Convert between binary and decimal in either direction.

Калькулятор Дробей

Add, subtract, multiply, or divide two fractions with auto-simplification.

Currency Converter

Quick approximate currency conversion using static reference rates.

Переводчик Pig Latin

Translate any text into Pig Latin instantly.

Перевёрнутый текст

Flip your text upside down with Unicode tricks.

Счётчик Слов

Count words, characters, and reading time for any text.

Horsepower Calculator

Compute horsepower from engine torque and RPM using the standard SAE formula.

Tire Size Calculator

Decode a tire size into overall diameter, sidewall height, and circumference.

Compression Ratio Calculator

Engine static compression ratio from bore, stroke, deck, gasket, and chamber volumes.

Rpm Calculator

Compute engine RPM at a given speed from tire size, gear, and final drive.

0 60 Calculator

Estimate 0-60 mph time from horsepower, weight, and drivetrain.

Wheel Horsepower Calculator

Estimate WHP at the wheels after drivetrain losses.

Turbo Size Calculator

Estimate compressor airflow target for a turbo build.

Boost Horsepower Calculator

Estimate boosted HP from a naturally-aspirated baseline and boost pressure.

Bsfc Calculator

Compute brake-specific fuel consumption from fuel flow and brake horsepower.

Wheel Offset Calculator

Compute wheel offset in mm from width and backspacing.

Speedometer Gear Calculator

Estimate the right driven-gear tooth count for accurate speedometer reading.

Boat Speed Calculator

Estimate top boat speed from HP and weight using Crouch's planing formula.

Nautical Mile Calculator

Convert between nautical miles, statute miles, and kilometers.

Crosswind Calculator

Resolve runway wind into headwind and crosswind components.

Flight Radiation Calculator

Estimate cosmic-ray radiation dose for a flight.

Gvwr Calculator

Total your truck's loaded weight and see which GVWR class it falls into.

Fuel Pump Calculator

Estimate fuel flow demand and per-injector load for a given HP target.

Traffic Density Calculator

Compute traffic density (vehicles per mile) from flow rate and speed.

Winch Size Calculator

Find the minimum winch capacity for your vehicle and terrain.

Калькулятор Стоимости Парковки

Compare pay-as-you-go parking against a monthly pass.

Калькулятор Стоимости Замены Масла

Compare DIY vs shop oil changes over a year of driving.

Car Insurance Estimator

Rough estimate of annual auto insurance premiums by age, vehicle, and coverage.

Калькулятор Скорости Велосипеда

Compute road-bike speed from cadence, gearing, and wheel size.

Train Vs Drive Calculator

Compare driving cost against a train ticket, including the value of your time.

Углеродный След Путешествия

Estimate CO₂ emissions for any trip by mode and distance.

Uber Vs Car Calculator

Compare monthly rideshare spend against the full cost of car ownership.

Miles To Dollars Calculator

Estimate the cash value of your airline miles by program and redemption.

Калькулятор Миль в Год

Total annual driving miles from commuting, leisure, and road trips.

Engine Hours To Miles

Convert engine hours (on a marine or industrial engine) to equivalent automotive miles.

Калькулятор Расстояния

Solve any of distance, speed, or time given the other two.

Toll Cost Calculator

Add up weekly, monthly, and annual toll spend — and the E-ZPass discount.

Калькулятор Времени Полёта

Estimate flight time from distance, cruise speed, and layover length.

Ticket Optimizer

Should you buy event tickets now or wait? A simple heuristic by time-to-event and category.

Конвертация размера обуви

Convert between US Men, US Women, UK, EU, and CM shoe sizes.

Конвертер размера кольца

Convert between US, UK, EU, and inner diameter / circumference ring sizes.

Калькулятор размера платья

Find your US, UK, and EU dress size from bust, waist, and hip measurements.

Калькулятор размера джинсов

Get your W × L jeans size from waist and inseam measurements.

Калькулятор размера шляпы

Find your hat size in numeric, fitted, and S/M/L formats from head circumference.

Калькулятор размера ремня

Find the belt size to order from your pants waist or measured waist.

Калькулятор размера куртки

Find your jacket size and length from chest, height, and weight.

Калькулятор размера перчаток

Find your glove size from hand circumference at the knuckles.

Калькулятор размера носков

Convert shoe size to sock size (S/M/L/XL).

Калькулятор размера футболки

Get your t-shirt size from chest and waist measurements.

Калькулятор размера брюк

Get your W × L pants size and a hip-to-waist ratio flag.

Конвертер размеров одежды

Convert women's top sizes across US, UK, EU, AU, IT, FR, and JP.

Размер обуви из США в Великобританию

Convert US shoe sizes to UK in either men's or women's sizing.

Размер обуви из Великобритании в США

Convert UK shoe sizes to US in either men's or women's sizing.

Размер обуви из мужского в женский

Convert between men's and women's US shoe sizes (1.5-size offset).

Калькулятор размера детской обуви

Convert measured foot length to US toddler/youth shoe size.

Калькулятор пряжи

How many skeins you need for a project, with a 10% safety buffer.

Конвертер размера вязальных спиц

Convert knitting needle sizes between US, metric (mm), and old UK numbering.

Калькулятор окантовки лоскутного одеяла

Compute strips and yardage for quilt binding.

Калькулятор полуквадратного треугольника

Cut size and square count for half-square triangles.

Калькулятор полотен штор

Compute panel width and required fabric for window curtains.

Калькулятор длины резинки

Find elastic length for waistbands, cuffs, and necklines.

Калькулятор швейных ниток

Estimate thread consumed by a seam from length and stitch type.

Калькулятор длины шнурков

Find the right shoelace length for your shoe and lacing style.

Калькулятор потерянных носков

Estimate how many socks you've lost to the laundry over the years.

Калькулятор бикини

Get top and bottom bikini sizes from bra size and hip measurement.

Калькулятор Обоев

Calculate rolls of wallpaper needed for a room, with waste and pattern repeat.

Калькулятор Доступности Аренды

Check if your target rent fits the 30% rule and standard DTI limits.

Стоимость Ремонта Дома

Get a price range for kitchen, bath, basement, and other renovations.

Калькулятор Стоимости Переезда

Estimate the cost of a local, long-distance, or interstate move.

Калькулятор Размера Газона

Compute lawn area in square feet and acres, plus seed and mowing estimates.

Калькулятор Стоимости Забора

Estimate fence cost by perimeter, material, height, and gate count.

Storage Unit Size

Pick the right storage unit size for your home and items.

Размер Новогодней Ёлки

Find the right tree height and width for your room.

Время Горения Свечи

Estimate how many hours a candle will burn from size, wick count, and wax type.

R-Значение Изоляции

Find recommended R-value and additional insulation needed by climate zone.

Dumpster Size Calculator

Find the right roll-off dumpster size for your project.

Internet Speed Cost

See $-per-Mbps and whether your plan suits your usage.

Water Bill Calculator

Estimate monthly water usage and cost from household activity.

Калькулятор GPA

Calculate your weighted GPA across up to 6 courses, with letter grades and credit hours.

Калькулятор Оценок

Compute your weighted course grade across up to 5 assignments.

Калькулятор Результата Теста

Compute percentage and letter grade from correct answers.

Калькулятор Рабочих Часов

Daily, weekly, and monthly hours from start time, end time, and breaks.

Калькулятор Счёта

Subtotal, discount, tax, and total for up to 5 line items.

Калькулятор Точки Безубыточности

Units and revenue needed to cover fixed and variable costs.

Счётчик Символов

Characters, words, Twitter remaining, and SMS segments for any text.

Проверка Надёжности Пароля

Score a password's strength locally based on length, variety, and patterns.

Конвертер Размера Шрифта

Convert between px, pt, em, rem, vw, and percent at a chosen base.

Sat Score Calculator

Approximate scaled SAT scores from raw section scores.

Числа в Слова

Spell out any number up to a trillion in English.

Генератор Обратного Текста

Reverse a string character-by-character or word order.

Nato Phonetic Alphabet

Spell any word using the NATO phonetic alphabet.

Калькулятор Времени Учёбы

Plan study hours per subject given an exam date and difficulty.

Конвертер Часовых Поясов

Convert a time between major world time zones.

Калькулятор Даты Выхода на Пенсию

Find your retirement date and time remaining based on age and country.

Дней до Дня Рождения

Count down to your next birthday from today's date.

Калькулятор Рабочих Дней

Count working days between two dates, excluding US federal holidays.

Калькулятор Времени Сна

Find the best bedtimes to wake refreshed at a target time.

Калькулятор Времени Пробуждения

Find the best wake times after a chosen bedtime.

Таймер Обратного Отсчёта

Count down the days, hours, and minutes to any future date.

Калькулятор Сколько Времени Назад

Count years, months, days, weeks, and hours since a past date.

Калькулятор Корейского Возраста

Convert international age to traditional Korean age.

Калькулятор Фазы Луны

Find the moon phase, illumination, and next full moon for any date.

Palindrome Date Finder

Find all palindrome dates in a given year.

Калькулятор Високосного Года

Check whether a year is a leap year, plus the next and last leap year.

Калькулятор Длительности Времени

Difference between two times in hours, minutes, and seconds.

Время в Десятичное

Convert HH:MM to a decimal hour value and back.

Калькулятор аудиокниг

Plan your audiobook reading pace and yearly book goals.

Длительность телесериала

Total runtime of a series across seasons, episodes, and lengths.

Калькулятор запойного просмотра

Find your binge finish date based on daily watch time.

Калькулятор подвеса гамака

Hang point height, tree spacing, and strap length for a comfy hammock.

Калькулятор гелиевых шаров

How many balloons does it take to lift a given weight?

Калькулятор размера палатки

Find the right tent capacity for your campers, gear, and style.

Калькулятор нумерологии

Compute Life Path and Name numbers from your DOB and full name.

Генератор счастливых чисел

Generate lottery-style numbers seeded by your name and today's date.

Калькулятор дней Minecraft

Convert between real minutes and Minecraft in-game days.

Robux в USD

Convert Robux to dollars (and back) at both direct buy and DevEx rates.

Калькулятор шансов в покере

Rough heads-up and multi-way win probability by hole-card category.

Калькулятор рейтинга в шахматах

Compute your new Elo after a single game vs an opponent.

Калькулятор Белка

Daily protein target by body weight, activity level, and goal.

Калькулятор Макросов

Daily calories, protein, fat, and carb targets from your body and goal.

Калькулятор Жира в Теле

Estimate body fat percentage with the US Navy method.

Калькулятор Идеального Веса

Compare your weight to Devine, Robinson, Miller, Hamwi, and healthy-BMI ranges.

Калькулятор Темпа Бега

Find pace, time, or distance from any two of the three.

Сожжённые Калории

Calories burned for any activity using MET values.

Diaper Calculator

Estimate diapers needed and cost by baby's age and brand.

Cost Of Having Baby

Total estimated cost of delivery plus the first five years.

Expiration Date Calculator

Estimate expected expiration date by item type.

Battery Charge Time

Estimate hours to charge a battery from current to target level.

Linear Inches Calculator

Total linear inches and airline carry-on / checked classification.

Headphone Power

How much amp power your headphones need to hit a target SPL.

Well Volume Calculator

Compute gallons of water in a well from diameter and depth.

Garbage Bag Size

Find the right gallon-rated bag size for your trash can.

Picture Frame Calculator

Compute mat, frame, and overall sizes for any artwork.

Калькулятор Кубических Футов

Compute volume in cubic feet, yards, meters, and liters.

Шестнадцатеричное в Десятичное

Convert between hexadecimal and decimal, with binary preview.

Научный Калькулятор

Evaluate math expressions with sin/cos/tan, log, sqrt, pi, e, and more.

Оценка в GPA

Convert a letter grade or percentage into GPA points.

Калькулятор читательского челленджа

Track progress on a yearly reading goal and project your finish date.

Сколько времени нужно прочитать книгу

Estimate hours to read a book at your pace.

Страниц в час

Measure your actual reading speed in pages per hour and words per minute.

Количество слов в книге

Typical word counts and page estimates by genre.

Калькулятор цели Goodreads

Are you on pace for your Goodreads reading challenge?

Количество страниц Kindle

Convert KOLL Kindle pages to print pages and words.

Калькулятор ванна vs душ

Find out whether baths or showers are cheaper for you over a year.

Калькулятор роста волос

Months to grow your hair to a target length.

Калькулятор косметических средств

Annual cost of your beauty routine.

Калькулятор зубной пасты

Tubes per year and annual toothpaste cost.

Время мытья рук

WHO-recommended hand-washing time and song references.

Калькулятор расходов на уход за кожей

Roll up the per-day and per-year cost of your skincare routine.

Стойкость парфюма

How many weeks a perfume bottle will last at your usage.

Стоимость окрашивания волос

Annual hair color cost by method and frequency.

Калькулятор стоимости макияжа

Annual cost of your makeup kit.

Калькулятор расхода мыла

How long a bar of soap lasts and the monthly cost.

Калькулятор масок

Masks needed per month and annual cost by type.

Насколько я богат

Where your income ranks against US (and rough global) distributions.

Net Worth Calculator

Compute net worth from assets minus liabilities; compare to age peers.

Калькулятор показателя IQ

Rough IQ estimate from a raw test score — strictly informal.

Калькулятор фэнтези-футбола

Score a player line in standard, PPR, or half-PPR scoring.

Влияние запрета соцсетей

Estimate reach and revenue lost if your account is banned.

Альтернативы времени в TikTok

What you could do instead of scrolling TikTok for X minutes a day.

Альтернативы времени в соцсетях

Yearly hours sunk into social media — and what they could become.

Pixels To Inches

Convert between pixels and physical inches at any PPI.

Pounds And Ounces

Combine pounds and ounces into total weight in oz, grams, kg, and decimal lbs.

Feet And Inches Calculator

Convert, add, or subtract feet-and-inches values.

Height In Inches

Convert feet+inches height to inches, cm, and meters with a percentile note.

Acreage Calculator

Compute area in acres from any shape's dimensions.

Land Area Calculator

Land area in acres, hectares, bigha, katha, gaj, cent, and marla.

Lot Size To Acres

Convert lot size in square feet (or L×W) to acres and other units.

Lot Size To Sq Feet

Convert acres or other area units to square feet and find the side of a square lot.

Scale Calculator

Solve scaled, real, or ratio given the other two.

Download Time Calculator

How long a file will take to download at a given connection speed.

Torque To Hp

Compute horsepower from torque and RPM (or torque from HP and RPM).

Watts To Amps

Compute amperage from wattage at a chosen voltage.

Amps To Watts

Compute wattage from amperage at a chosen voltage.

Kwh To Kw

Convert between energy (kWh) and average power (kW) over a time period.

Dbm To Watts

Logarithmic conversion between dBm and watts.

Rms To Watts

Compute RMS and peak power from RMS voltage and impedance.

Joules To Volts

Convert energy and charge (or capacitance) into voltage.

Barometric Pressure

Pressure converted across all weather units with a forecast hint.

Ppm Calculator

Parts-per-million across PPM, PPB, ppt, percent, and mg/L.

Hardness Conversion

Convert between Rockwell C, Rockwell B, Brinell, Vickers, and Shore D.

Калькулятор Соотношения

Simplify, scale, percentage-ize, or split a ratio.

Imperial To Metric

One-stop imperial→metric conversion across length, weight, volume, temperature, speed.

Metric To Imperial

Convert metric to imperial across length, weight, volume, temperature, and speed.

Dimensional Analysis

Educational unit-conversion chain across length, weight, volume, speed, temperature.

Калькулятор баллов ACT

Convert ACT raw section scores to scaled 1–36 scores and a composite.

Калькулятор GPA колледжа

Compute term and cumulative GPA on the 4.0 scale.

Калькулятор итоговой оценки

Find the score you need on the final exam to reach your target grade.

Калькулятор кривой оценок

Apply square-root, flat-point, or scale-to-100 curves to a test score.

Калькулятор года выпуска

Find your high-school and college graduation years.

Калькулятор GWA

Compute General Weighted Average on the Philippine 1.0–5.0 scale.

Калькулятор GPA старшей школы

Weighted and unweighted GPA with honors/AP/IB course bonuses.

Калькулятор баллов IELTS

Convert IELTS raw scores to band scores and an overall band.

Калькулятор импакт-фактора

Compute a journal's impact factor from citations and article count.

Калькулятор баллов PTE

Weighted overall PTE Academic score with CEFR equivalent.

Калькулятор оценки за семестр

Weighted course grade across all assignments.

Калькулятор оценки за тест

Percentage and letter grade from correct answers, with optional penalties.

Калькулятор GPA Пакистана

CGPA on the Pakistani HEC 4.0 scale from marks and credit hours.

Калькулятор расстояния в классе

Maximum desks in a room given social-distancing spacing.

Калькулятор соотношения сторон

Find an aspect ratio from dimensions, or solve a missing dimension.

Калькулятор размера файла изображения

Estimate image file size by dimensions, bit depth, and format.

Калькулятор PPI

Pixels per inch from screen resolution and diagonal size.

Калькулятор размера экрана

Width, height, and area from a diagonal and aspect ratio.

Калькулятор размера телевизора

Recommended TV diagonal for your seating distance.

Калькулятор высоты крепления ТВ

Ideal wall height to mount a TV for eye-level viewing.

Калькулятор размера видеофайла

Estimate video file size from duration, resolution, and codec.

Калькулятор экспозиции

Compute exposure value from aperture, shutter speed, and ISO.

Калькулятор глубины резкости

Near, far, and total depth of field for any lens setup.

Калькулятор фокусного расстояния

Focal length from sensor size and field of view, plus 35mm equivalent.

Калькулятор кроп-фактора

Crop factor and 35mm-equivalent focal lengths from sensor dimensions.

Калькулятор масштаба разрешения

Scale a resolution by a factor and see the pixel-count change.

Калькулятор time-lapse

Photos, video length, and storage for a time-lapse shoot.

Калькулятор выдержки

Recommended shutter speed for handheld, motion, or astro shots.

Калькулятор поля зрения камеры

Horizontal, vertical, and diagonal angle of view for a lens.

Калькулятор гиперфокального расстояния

The focus distance that maximizes depth of field.

Калькулятор пикселей в размер печати

Maximum print size for an image at a chosen DPI.

Калькулятор проектора

Throw distance or screen size from a projector's throw ratio.

Калькулятор соотношения изображения

Resize an image keeping its aspect ratio.

Калькулятор контрастности

Display contrast ratio from white and black luminance.

Калькулятор увеличения линзы

Magnification and reproduction ratio for a lens at a subject distance.

Калькулятор фото без моргания

How many shots you need for a blink-free group photo.

Калькулятор кадров в таймкод

Convert a frame number to HH:MM:SS:FF timecode.

Калькулятор таймкода в кадры

Convert HH:MM:SS:FF timecode to a total frame count.

Калькулятор плёнки

Rolls, frames, and cost for an analog film shoot.

Калькулятор вертикального преувеличения

Vertical exaggeration factor for profiles and cross-sections.

Калькулятор 3D-рендеринга

Total render time and completion date for a 3D project.

Калькулятор битрейта стриминга

Recommended streaming bitrate and required upload speed.

Калькулятор BPM

Calculate tempo (BPM) from a beat count and duration.

Калькулятор частоты ноты

Frequency of any musical note in equal temperament.

Калькулятор музыкального интервала

Name the interval between two notes and its frequency ratio.

Калькулятор музыкального лада

Generate the notes of any scale from a root note.

Калькулятор аккордов

Notes and intervals for any chord from a root note.

Поиск аккордов

Identify a chord from a set of notes.

Калькулятор обращения аккордов

Reorder a chord's notes into root, 1st, 2nd, or 3rd inversion.

Генератор аккордовой последовательности

Build a chord progression in any key.

Транспонирование аккордов

Transpose a chord progression to a new key.

Калькулятор музыкальной транспозиции

Transpose a note up or down by a number of semitones.

Калькулятор полутонов

Count the semitones between two notes.

Калькулятор тональности

Sharps, flats, and relatives for any major or minor key.

Калькулятор длительности музыки

Total playing time from BPM, time signature, and bar count.

Калькулятор delay и reverb

Note-synced delay times in milliseconds for a given tempo.

Калькулятор ладов

Distance of each fret from the nut for a given scale length.

Калькулятор натяжения струн гитары

Approximate string tension from gauge, scale length, and pitch.

Калькулятор гармонического ряда

First 16 harmonics of a fundamental frequency.

Калькулятор вокального диапазона

Classify a voice type from the lowest and highest comfortable notes.

Калькулятор корпуса динамика

Recommended enclosure volume for a driver.

Калькулятор длины порта

Port length for a vented speaker enclosure.

Калькулятор размера аудиофайла

Estimate audio file size by sample rate, bit depth, and channels.

Калькулятор времени работы аккумулятора

Estimate device runtime from battery capacity and consumption.

Калькулятор ёмкости аккумулятора

Convert between Ah, Wh, and joules for a battery.

Калькулятор размера аккумулятора

Minimum battery capacity for a target runtime.

Калькулятор времени полёта дрона

Estimate drone flight time from battery and motor draw.

Калькулятор двигателя дрона

Thrust per motor and thrust-to-weight ratio for a multirotor.

Калькулятор рабочего цикла

Duty cycle, frequency, and average voltage of a PWM signal.

Калькулятор eDPI

Effective DPI for FPS mouse sensitivity comparison.

Калькулятор энтропии пароля

Estimate password strength in bits of entropy and crack time.

Калькулятор RAID

Usable storage and fault tolerance for a RAID array.

Калькулятор chmod

Convert Unix file permissions to octal and symbolic notation.

Калькулятор IP-подсети

Network, broadcast, host range, and host count for an IPv4 subnet.

Калькулятор CIDR

Parse CIDR notation into network, range, and host count.

Калькулятор пропускной способности

Required bandwidth to transfer a file in a target time.

Калькулятор времени загрузки

How long a file takes to upload at a given speed.

Калькулятор uptime

Allowed downtime for a given uptime percentage.

Калькулятор передачи данных

Transfer time across USB, Ethernet, Wi-Fi, 5G, and fiber.

Калькулятор baud rate

Effective data throughput of a serial connection.

Конвертер IP-адресов

Convert an IPv4 address between dotted-decimal, integer, and hex.

Base64 Кодировщик

Encode text to Base64 or decode Base64 back to text.

Конвертер ASCII

Convert text to ASCII codes and back.

Калькулятор кода Хэмминга

Add Hamming parity bits to a binary data word.

Калькулятор расстояния Хэмминга

Count differing bits between two binary strings.

Калькулятор бита чётности

Compute the parity bit for a binary data word.

Калькулятор логических вентилей

Evaluate any 2-input logic gate and show its truth table.

Калькулятор усиления Op-Amp

Voltage gain of inverting and non-inverting op-amp circuits.

Калькулятор ширины дорожки PCB

Minimum trace width for a current using the IPC-2221 standard.

Калькулятор сопротивления дорожки PCB

Resistance and voltage drop of a PCB copper trace.

Калькулятор тока дорожки PCB

Maximum current a PCB trace can carry (IPC-2221).

Калькулятор импеданса PCB

Characteristic impedance of a microstrip PCB trace.

Калькулятор импеданса кабеля

Characteristic impedance of a coaxial cable.

Калькулятор задержки распространения

Signal travel delay through a trace or cable.

Калькулятор LM317

Resistor value for a target LM317 regulator output voltage.

Калькулятор задержек RAM

True memory latency in nanoseconds from CL and frequency.

Калькулятор согласования импеданса

L-network component values to match two impedances.

Калькулятор суммарных гармонических искажений

THD from a fundamental and its harmonic amplitudes.

Конвертер единиц RF

Convert RF power between dBm, watts, and dBW.

Калькулятор шифра Виженера

Encrypt or decrypt text with the Vigenère cipher.

Конвертер Hex в текст

Decode a hexadecimal string into readable text.

Калькулятор с плавающей запятой

Show the IEEE 754 single-precision representation of a number.

Калькулятор GSD

GSD for aerial/drone mapping from sensor, lens, and altitude.

Калькулятор произведения пропускной способности × задержки

Data in flight on a network path — the ideal TCP window size.

Калькулятор KD

Compute your kill/death ratio and KDA from kills, deaths, and assists.

Генератор кругов Minecraft

Generate the block count and shape data for a Minecraft circle of any diameter.

Калькулятор стаков Minecraft

Work out full stacks, leftovers, and chest space for any pile of Minecraft items.

Калькулятор портала Незер

Convert Overworld coordinates to the Nether and back at Minecraft's 1:8 ratio.

Поиск портала Энда

Estimate how far a Minecraft stronghold sits from the world origin by its ring.

Калькулятор конфет Pokémon GO

Find how much candy you need to evolve a Pokémon and how far you must walk for it.

Калькулятор блоков пирамиды

Count the blocks needed to build a solid, hollow, or stepped pyramid.

Калькулятор распада Rust

Estimate how much health a Rust structure loses to decay while you are offline.

Калькулятор шансов импостора

Work out your chance of being the impostor in a social-deduction party game.

Калькулятор CBM

Calculate cubic metres (CBM) of a shipment from carton dimensions and quantity.

Калькулятор объёмного веса

Find the billable weight of a parcel by comparing actual weight to dimensional weight.

Калькулятор DPMO

Calculate Defects Per Million Opportunities and the matching Six Sigma level.

Калькулятор класса груза

Determine NMFC freight class from a shipment's weight and dimensions by density.

Калькулятор паллет

Work out how many boxes fit on a pallet, with layers and total stack weight.

Калькулятор точки повторного заказа

Calculate the inventory reorder point from demand, lead time, and safety stock.

Калькулятор такт-времени

Calculate takt time — the production pace needed to meet customer demand.

Калькулятор загрузки контейнера

Estimate how many shipping containers a cargo load needs by volume and weight.

Обратный отсчёт до Рождества

See exactly how many days, weeks, and shopping days are left until Christmas.

Калькулятор Пасхи

Find the date of Easter Sunday for any year using the Gregorian algorithm.

Калькулятор снеговика

Size the three balls of a snowman and estimate how much snow you need.

Калькулятор вампирского апокалипсиса

Model how fast vampires could convert the human population through exponential growth.

Калькулятор зомби-вторжения

Estimate how fast a zombie outbreak spreads using a simplified infection model.

Калькулятор Trick or Treat

Estimate the candy haul and walking distance from a night of trick-or-treating.

Калькулятор Белого Рождества

See the historical probability of snow on the ground on Christmas Day by city.

Конвертер календаря майя

Convert any Gregorian date to the Maya Long Count, Tzolkin, and Haab calendars.

Калькулятор новогодних обещаний

Plan a resolution: see days left in the year and total hours you can commit.

Калькулятор температуры по ветру

Calculate the NWS wind chill temperature and frostbite risk from temp and wind speed.

Калькулятор осадков

Calculate the volume of water collected from rainfall over a given area.

Калькулятор дождя в снег

Convert rainfall to expected snowfall using temperature-based snow ratios.

Калькулятор солнечных ванн

Estimate safe sun exposure time from skin type, UV index, and sunscreen SPF.

Калькулятор землетрясений

Calculate the energy released by an earthquake and its intensity at a distance.

Калькулятор антиподов

Find the exact point on the opposite side of the Earth from any coordinates.

Калькулятор азимута

Calculate the compass bearing (azimuth) from one coordinate to another.

Калькулятор расстояния по координатам

Calculate the great-circle distance between two coordinates with the Haversine formula.

Калькулятор уровня вовлечённости

Calculate social media engagement rate from followers, likes, comments, and shares.

Калькулятор времени работы кислородного баллона

Estimate how long a medical oxygen cylinder lasts at a given flow rate.

Калькулятор веса бриллианта

Estimate the carat weight of a diamond from its shape and millimetre measurements.

Калькулятор гендерного разрыва в оплате

Calculate the pay gap between two salaries as a percentage and dollar difference.

Калькулятор PERT

Calculate a PERT three-point estimate with standard deviation and variance.

Калькулятор NaNoWriMo

Track your novel-writing pace and find the daily word count needed to hit your goal.

Калькулятор солёного теста

Scale a salt dough recipe up or down for any number of batches.

Калькулятор чаевых за пиццу

Split a pizza order with tip across friends and see the per-person cost.

Калькулятор matched betting

Calculate the lay stake, liability, and locked-in profit for a matched bet.

Калькулятор дня недели

Find the day of the week for any date, plus day number and week of the year.

Калькулятор длительности подбора

Estimate total time-to-hire by adding up each stage of your recruitment process.

Калькулятор аквариума

Calculate aquarium volume, full weight, and fish capacity from tank dimensions.

Калькулятор толщины стекла аквариума

Estimate the minimum glass thickness needed for an aquarium of a given size.

Калькулятор песочницы

Calculate how much sand a sandbox needs and the number of bags to buy.

Шифр Цезаря

Encrypt or decrypt text with a Caesar cipher and see all 25 brute-force shifts.

Калькулятор флага США

Calculate every dimension of a US flag from its hoist height per Executive Order 10834.

Калькулятор HP 5e

Calculate a D&D 5e character's hit points by class, level, and Constitution modifier.

Калькулятор столкновений 5e

Rate a D&D 5e combat encounter as easy, medium, hard, or deadly by XP thresholds.

Калькулятор point buy 5e

Track the 27-point budget for D&D 5e ability scores and see the modifiers.

Калькулятор EV в покере

Calculate the expected value of a poker call from pot size, bet, and your equity.

Строчные в Заглавные

Convert any lowercase text to UPPERCASE instantly in your browser.

Конвертер начальных заглавных

Capitalize the first letter of every word, including short words and articles.

Конвертер регистра предложения

Capitalize the first letter of each sentence and lowercase the rest.

Генератор капители

Convert text to ꜱᴍᴀʟʟ ᴄᴀᴘs using Unicode small-capital letters.

Генератор маленького текста

Convert text to ˢᵐᵃˡˡ superscript-style letters for bios and captions.

Генератор зачёркнутого текста

Add a Unicode strikethrough line through any text you can copy anywhere.

Генератор нижнего индекса

Convert numbers and letters to Unicode subscript characters.

Генератор верхнего индекса

Convert numbers and letters to Unicode superscript characters.

Генератор готического шрифта

Convert text to 𝔤𝔬𝔱𝔥𝔦𝔠 Fraktur letters you can copy and paste.

Генератор зеркального текста

Reverse text and create a mirrored backwards version you can copy.

Конвертер чисел в буквы

Decode a number sequence into letters using A=1, B=2 … Z=26.

Конвертер букв в числа

Encode letters into numbers using A=1, B=2 … Z=26.

Идентификатор хеша

Identify a hash type from its length and character set — MD5, SHA, bcrypt and more.

Калькулятор соотношения 16:9

Calculate the 16:9 height for any width — the standard widescreen video ratio.

Калькулятор соотношения 16:10

Calculate the 16:10 height for any width — common on laptop and monitor screens.

Калькулятор соотношения 4:3

Calculate the 4:3 height for any width — the classic fullscreen TV ratio.

Калькулятор CSS-соотношения

Generate the CSS aspect-ratio property and padding-top percentage for any ratio.

Калькулятор пиксельного соотношения

Calculate the pixel aspect ratio (PAR) from display and pixel dimensions.

Калькулятор вертикального соотношения

Calculate portrait-orientation heights at common ratios like 2:3, 3:4, and 9:16.

Калькулятор соотношения экрана

Find the simplified aspect ratio of any screen from its width and height.

Дни до Осени

Count down the days until the first day of autumn (September 22).

Дни до Дня святого Валентина

Count down the days remaining until Valentine's Day on February 14.

Обратный отсчёт до Нового Года

Count down the days, hours, and minutes until New Year's Day.

Калькулятор веса в каратах

Convert gemstone weight in grams to carats and points.

Калькулятор карат бриллианта

Convert diamond weight to carats and estimate carat weight from a round diamond's diameter.

Конвертация мм в караты

Estimate a gemstone's carat weight from its millimetre diameter by shape.

В каком классе я был

Find which US school grade you were in during any given year.