Inches to Millimeters Converter
CommonMeters, feet, miles and other distances.
How to convert Inches to Millimeters
Multiply the inches value by 25.4: 1 in = 25.4 mm. Going the other way, 1 mm = 0.0393701 in, so divide by 25.4 or use the Millimeters to Inches converter.
About these units
Inches (in)
An inch is exactly 2.54 centimeters, one twelfth of a foot. Screen sizes, pipe diameters and paper are commonly specified in inches in the United States.
Millimeters (mm)
A millimeter is one thousandth of a meter. It is the usual unit for engineering drawings, paper sizes and anything measured finer than a centimeter.
Inches to Millimeters conversion table
| Inches (in) | Millimeters (mm) |
|---|---|
| 1 in | 25.4 mm |
| 2 in | 50.8 mm |
| 3 in | 76.2 mm |
| 4 in | 101.6 mm |
| 5 in | 127 mm |
| 10 in | 254 mm |
| 20 in | 508 mm |
| 25 in | 635 mm |
| 50 in | 1,270 mm |
| 100 in | 2,540 mm |
| 500 in | 12,700 mm |
| 1,000 in | 25,400 mm |
More inches conversions
- Inches to Feet1 in = 0.0833333 ft
- Inches to Yards1 in = 0.0277778 yd
- Inches to Miles1 in = 1.5783e-5 mi
- Inches to Nautical Miles1 in = 1.3715e-5 nmi
- Inches to Fathoms1 in = 0.0138889 fth
- Inches to Furlongs1 in = 0.000126263 fur
- Inches to Chains1 in = 0.00126263 ch
- Inches to Meters1 in = 0.0254 m
- Inches to Light Years1 in = 2.6847e-18 ly
See every unit on the Length Converter.