計算機

燃料費計算機

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

ガソリン計算機

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

燃費(MPG)計算機

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

速度計算機

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

運転時間計算機

Estimate driving time including planned rest stops.

通勤計算機

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

ロードトリップ費用計算機

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

EV充電費用計算機

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

テスラ充電費用計算機

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

車の減価償却計算機

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

カープール計算機

See how much carpooling cuts your annual commute cost.

ブラサイズ計算機

Calculate your bra size from band and bust measurements.

ウェイトブランケット計算機

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

テーブルクロスサイズ計算機

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

サーキュラースカート計算機

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

電気代計算機

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

塗料使用量計算機

Estimate how many gallons of paint your room needs.

床材計算機

Compute square footage and material needed including waste factor.

タイル計算機

Count tiles needed for any room with waste built in.

住宅ローン計算機

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

Solar Panel Savings Calculator

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

エアコンBTU計算機

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

チップ計算機

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

割引計算機

Find the sale price and savings for any percent off.

給与から時給

Convert an annual salary into an hourly rate.

時給から給与

Convert an hourly wage to monthly and annual income.

ROI計算機

Compute return on investment and annualized return.

利益率計算機

Compute gross profit and margin from revenue and cost.

フリーランス料金計算機

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

ポモドーロ計算機

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

残業代計算機

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

会議コスト計算機

Calculate what a meeting truly costs in payroll dollars.

年齢計算機

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

クリスマスまでの日数

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

睡眠サイクル計算機

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

出産予定日計算機

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

営業日計算機

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

コイントス

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

サイコロ

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

乱数ジェネレーター

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

イエスかノーか

Let randomness decide. A fair coin flip with words.

星座計算機

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

恋愛相性計算機

Just-for-fun compatibility score from two names.

シャワー費用計算機

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

日焼け止め計算機

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

読書時間計算機

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

オーディオブック速度計算機

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

BMI計算機

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

カロリー計算機

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

水分摂取量計算機

Estimate your daily water target adjusted for activity and climate.

歩数からマイル

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

パーセント計算機

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

平方フィート計算機

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

ローマ数字変換ツール

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

2進数から10進数

Convert between binary and decimal in either direction.

分数計算機

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

Currency Converter

Quick approximate currency conversion using static reference rates.

ピッグラテン翻訳ツール

Translate any text into Pig Latin instantly.

逆さま文字

Flip your text upside down with Unicode tricks.

文字数カウント

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.

駐車料金計算機

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

オイル交換費用計算機

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.

自転車速度計算機

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.

旅行のカーボンフットプリント

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.

年間走行距離計算機

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.

距離計算機

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.

飛行時間計算機

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.

靴サイズ変換

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

リングサイズ変換ツール

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

ドレスサイズ計算機

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

ジーンズサイズ計算機

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

帽子サイズ計算機

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

ベルトサイズ計算機

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

ジャケットサイズ計算機

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

手袋サイズ計算機

Find your glove size from hand circumference at the knuckles.

靴下サイズ計算機

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

Tシャツサイズ計算機

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

パンツサイズ計算機

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

衣類サイズ変換ツール

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

USからUKの靴サイズ

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

UKからUSの靴サイズ

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

メンズからレディースの靴サイズ

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

子供靴サイズ計算機

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

毛糸計算機

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

編み針サイズ変換ツール

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

キルトバインディング計算機

Compute strips and yardage for quilt binding.

ハーフスクエアトライアングル計算機

Cut size and square count for half-square triangles.

カーテンパネル計算機

Compute panel width and required fabric for window curtains.

ゴム長さ計算機

Find elastic length for waistbands, cuffs, and necklines.

縫い糸計算機

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

靴ひも長さ計算機

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

なくした靴下計算機

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

ビキニ計算機

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

壁紙計算機

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

家賃負担能力計算機

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

住宅リフォーム費用

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

引っ越し費用計算機

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

芝生サイズ計算機

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

フェンス費用計算機

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

Storage Unit Size

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

クリスマスツリーサイズ

Find the right tree height and width for your room.

キャンドル燃焼時間

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

断熱R値計算機

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.

GPA計算機

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

成績計算機

Compute your weighted course grade across up to 5 assignments.

テストスコア計算機

Compute percentage and letter grade from correct answers.

労働時間計算機

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

請求書計算機

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

損益分岐点計算機

Units and revenue needed to cover fixed and variable costs.

文字数カウンター

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

パスワード強度チェッカー

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

フォントサイズ変換ツール

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

Sat Score Calculator

Approximate scaled SAT scores from raw section scores.

数字を単語に

Spell out any number up to a trillion in English.

逆さ文字ジェネレーター

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

Nato Phonetic Alphabet

Spell any word using the NATO phonetic alphabet.

学習時間計算機

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

タイムゾーン変換ツール

Convert a time between major world time zones.

退職日計算機

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

誕生日までの日数

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

勤務日数計算機

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

就寝時間計算機

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

起床時間計算機

Find the best wake times after a chosen bedtime.

カウントダウンタイマー

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

どれくらい前か計算機

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

韓国年齢計算機

Convert international age to traditional Korean age.

月の満ち欠け計算機

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

Palindrome Date Finder

Find all palindrome dates in a given year.

うるう年計算機

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

経過時間計算機

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

時刻を10進数に

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

オーディオブック計算機

Plan your audiobook reading pace and yearly book goals.

テレビシリーズの長さ

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

一気見計算機

Find your binge finish date based on daily watch time.

ハンモック設置計算機

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

ヘリウム風船計算機

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

テントサイズ計算機

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

数秘術計算機

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

ラッキーナンバー生成器

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

マインクラフト日数計算機

Convert between real minutes and Minecraft in-game days.

RobuxからUSD

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

ポーカーオッズ計算機

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

チェスレーティング計算機

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

タンパク質計算機

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

マクロ計算機

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

体脂肪計算機

Estimate body fat percentage with the US Navy method.

理想体重計算機

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

ランニングペース計算機

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

消費カロリー

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.

立方フィート計算機

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

16進数から10進数

Convert between hexadecimal and decimal, with binary preview.

関数電卓

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

成績からGPA

Convert a letter grade or percentage into GPA points.

読書チャレンジ計算機

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

本を読むのにどれくらいかかるか

Estimate hours to read a book at your pace.

1時間あたりのページ数

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

書籍の単語数

Typical word counts and page estimates by genre.

Goodreads目標計算機

Are you on pace for your Goodreads reading challenge?

Kindleページ数

Convert KOLL Kindle pages to print pages and words.

入浴 vs シャワー計算機

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

毛髪成長計算機

Months to grow your hair to a target length.

美容製品計算機

Annual cost of your beauty routine.

歯磨き粉計算機

Tubes per year and annual toothpaste cost.

手洗い時間

WHO-recommended hand-washing time and song references.

スキンケア費用計算機

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

香水の持続時間

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

ヘアカラー費用

Annual hair color cost by method and frequency.

メイク費用計算機

Annual cost of your makeup kit.

石鹸使用量計算機

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

マスク計算機

Masks needed per month and annual cost by type.

私はどれくらい裕福か

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

Net Worth Calculator

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

IQスコア計算機

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

ファンタジーフットボール計算機

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

ソーシャルメディア禁止の影響

Estimate reach and revenue lost if your account is banned.

TikTok時間の代替案

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

ソーシャルメディア時間の代替案

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.

比率計算機

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.

ACTスコア計算機

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

大学GPA計算機

Compute term and cumulative GPA on the 4.0 scale.

最終成績計算機

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

成績カーブ計算機

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

卒業年計算機

Find your high-school and college graduation years.

GWA計算機

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

高校GPA計算機

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

IELTSスコア計算機

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

インパクトファクター計算機

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

PTEスコア計算機

Weighted overall PTE Academic score with CEFR equivalent.

学期成績計算機

Weighted course grade across all assignments.

テスト成績計算機

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

パキスタンGPA計算機

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

教室間隔計算機

Maximum desks in a room given social-distancing spacing.

アスペクト比計算機

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

画像ファイルサイズ計算機

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

PPI計算機

Pixels per inch from screen resolution and diagonal size.

画面サイズ計算機

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

テレビサイズ計算機

Recommended TV diagonal for your seating distance.

テレビ取付高さ計算機

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

動画ファイルサイズ計算機

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

露出計算機

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

被写界深度計算機

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

焦点距離計算機

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

クロップファクター計算機

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

解像度スケール計算機

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

タイムラプス計算機

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

シャッタースピード計算機

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

カメラ視野計算機

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

過焦点距離計算機

The focus distance that maximizes depth of field.

ピクセルから印刷サイズ計算機

Maximum print size for an image at a chosen DPI.

プロジェクター計算機

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

画像比率計算機

Resize an image keeping its aspect ratio.

コントラスト比計算機

Display contrast ratio from white and black luminance.

レンズ倍率計算機

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

瞬きなし写真計算機

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

フレームからタイムコード計算機

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

タイムコードからフレーム計算機

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

フィルム計算機

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

垂直強調計算機

Vertical exaggeration factor for profiles and cross-sections.

3Dレンダリング計算機

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

ストリーミングビットレート計算機

Recommended streaming bitrate and required upload speed.

BPM計算機

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

音符周波数計算機

Frequency of any musical note in equal temperament.

音楽インターバル計算機

Name the interval between two notes and its frequency ratio.

音階計算機

Generate the notes of any scale from a root note.

コード計算機

Notes and intervals for any chord from a root note.

コードファインダー

Identify a chord from a set of notes.

コード転回計算機

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

コード進行ジェネレーター

Build a chord progression in any key.

コードトランスポーザー

Transpose a chord progression to a new key.

音楽転調計算機

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

半音計算機

Count the semitones between two notes.

調号計算機

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

音楽長さ計算機

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

ディレイとリバーブ計算機

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

フレット計算機

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

ギター弦張力計算機

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

倍音列計算機

First 16 harmonics of a fundamental frequency.

音域計算機

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

スピーカーボックス計算機

Recommended enclosure volume for a driver.

ポート長さ計算機

Port length for a vented speaker enclosure.

音声ファイルサイズ計算機

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

バッテリー寿命計算機

Estimate device runtime from battery capacity and consumption.

バッテリー容量計算機

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

バッテリーサイズ計算機

Minimum battery capacity for a target runtime.

ドローン飛行時間計算機

Estimate drone flight time from battery and motor draw.

ドローンモーター計算機

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

デューティサイクル計算機

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

eDPI計算機

Effective DPI for FPS mouse sensitivity comparison.

パスワードエントロピー計算機

Estimate password strength in bits of entropy and crack time.

RAID計算機

Usable storage and fault tolerance for a RAID array.

chmod計算機

Convert Unix file permissions to octal and symbolic notation.

IPサブネット計算機

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

CIDR計算機

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

帯域幅計算機

Required bandwidth to transfer a file in a target time.

アップロード時間計算機

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

稼働時間計算機

Allowed downtime for a given uptime percentage.

データ転送計算機

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

ボーレート計算機

Effective data throughput of a serial connection.

IPアドレス変換ツール

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

Base64エンコーダー

Encode text to Base64 or decode Base64 back to text.

ASCII変換ツール

Convert text to ASCII codes and back.

ハミング符号計算機

Add Hamming parity bits to a binary data word.

ハミング距離計算機

Count differing bits between two binary strings.

パリティビット計算機

Compute the parity bit for a binary data word.

論理ゲート計算機

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

オペアンプゲイン計算機

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

PCBトレース幅計算機

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

PCBトレース抵抗計算機

Resistance and voltage drop of a PCB copper trace.

PCBトレース電流計算機

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

PCBインピーダンス計算機

Characteristic impedance of a microstrip PCB trace.

ケーブルインピーダンス計算機

Characteristic impedance of a coaxial cable.

伝搬遅延計算機

Signal travel delay through a trace or cable.

LM317計算機

Resistor value for a target LM317 regulator output voltage.

RAMレイテンシ計算機

True memory latency in nanoseconds from CL and frequency.

インピーダンスマッチング計算機

L-network component values to match two impedances.

全高調波歪計算機

THD from a fundamental and its harmonic amplitudes.

RF単位変換ツール

Convert RF power between dBm, watts, and dBW.

ヴィジュネル暗号計算機

Encrypt or decrypt text with the Vigenère cipher.

Hexからテキスト変換ツール

Decode a hexadecimal string into readable text.

浮動小数点計算機

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

GSD計算機

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

帯域幅遅延積計算機

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

KD計算機

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

マインクラフト円ジェネレーター

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

マインクラフトスタック計算機

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

ネザーポータル計算機

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

エンドポータル探索ツール

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

ポケモンGOアメ計算機

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

ピラミッドブロック計算機

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

Rust崩壊計算機

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

インポスター確率計算機

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

CBM計算機

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

容積重量計算機

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

DPMO計算機

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

貨物クラス計算機

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

パレット計算機

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

発注点計算機

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

タクトタイム計算機

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

コンテナ積載計算機

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

クリスマスカウントダウン

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

イースター計算機

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

雪だるま計算機

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

ヴァンパイアアポカリプス計算機

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

ゾンビ侵略計算機

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

トリックオアトリート計算機

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

ホワイトクリスマス計算機

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

マヤ暦変換ツール

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

新年の抱負計算機

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

ウィンドチル計算機

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

降雨量計算機

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

雨から雪計算機

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

日光浴計算機

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

地震計算機

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

対蹠点計算機

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

方位角計算機

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

緯度経度距離計算機

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

エンゲージメント率計算機

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

酸素ボンベ持続時間計算機

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

ダイヤモンド重量計算機

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

男女賃金格差計算機

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

PERT計算機

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

NaNoWriMo計算機

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

塩生地計算機

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

ピザチップ計算機

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

マッチドベッティング計算機

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

曜日計算機

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

採用プロセス期間計算機

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

アクアリウム計算機

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

アクアリウムガラス厚さ計算機

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

砂場計算機

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

シーザー暗号シフター

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

アメリカ国旗計算機

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

5e HP計算機

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

5e エンカウンター計算機

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

5e ポイント購入計算機

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

ポーカーEV計算機

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

小文字から大文字

Convert any lowercase text to UPPERCASE instantly in your browser.

キャピタルケース変換ツール

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

センテンスケース変換ツール

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

スモールキャップ生成器

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

小文字生成器

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

取り消し線テキスト生成器

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

下付き文字生成器

Convert numbers and letters to Unicode subscript characters.

上付き文字生成器

Convert numbers and letters to Unicode superscript characters.

ゴシックフォント生成器

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

ミラーテキスト生成器

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

数字から文字変換ツール

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

文字から数字変換ツール

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

ハッシュ識別ツール

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

16:9アスペクト比計算機

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

16:10アスペクト比計算機

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

4:3アスペクト比計算機

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

CSSアスペクト比計算機

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

ピクセルアスペクト比計算機

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

縦向きアスペクト比計算機

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

画面比率計算機

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

秋までの日数

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

バレンタインまでの日数

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

新年カウントダウン

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

カラット重量計算機

Convert gemstone weight in grams to carats and points.

ダイヤモンドカラット計算機

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

mmからカラット変換

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

私は何年生だったか

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