Length
in to mm Converter
1 in = 25.4 mm
Bidirectional ยท live
Reference table โ in to mm
| in | mm |
|---|---|
| 0.5 | 12.7 |
| 1 | 25.4 |
| 1.5 | 38.1 |
| 2 | 50.8 |
| 3 | 76.2 |
| 4 | 101.6 |
| 5 | 127 |
| 6 | 152.4 |
| 8 | 203.2 |
| 10 | 254 |
| 12 | 304.8 |
| 16 | 406.4 |
About this conversion
Length conversions span the SI metric ladder (mm โ cm โ m โ km) and the imperial system (inches, feet, yards, miles). 1 inch is exactly 25.4 mm by international definition.
Common questions
How many mm in 1 in?
1 in equals 25.4 mm.
What is the conversion factor between in and mm?
1 in = 25.4 mm.
How do I convert 8 in to mm?
8 in = 203.2 mm.