UnitConvertInches to Millimeters
1 in = 25.4 mm
How to convert inches to millimeters
mm = in × 25.4
Example: 5 in = 127 mm
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 |
| 6 in | 152.4 mm |
| 7 in | 177.8 mm |
| 8 in | 203.2 mm |
| 9 in | 228.6 mm |
| 10 in | 254 mm |
| 15 in | 381 mm |
| 20 in | 508 mm |
| 25 in | 635 mm |
| 30 in | 762 mm |
| 40 in | 1,016 mm |
| 50 in | 1,270 mm |
| 75 in | 1,905 mm |
| 100 in | 2,540 mm |
| 250 in | 6,350 mm |
| 500 in | 12,700 mm |
| 1,000 in | 25,400 mm |
About the units
Inches: The inch is an imperial and US customary unit of length, defined since 1959 as exactly 2.54 centimeters. It is used for screen sizes, clothing and hardware in the US and UK.
Millimeters: The millimeter is a metric unit of length equal to one thousandth of a meter, used for precise measurements in engineering, manufacturing and rainfall.
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Frequently asked questions
How many millimeters are in 1 inch?
1 inch equals 25.4 millimeters.
How many inches are in 1 millimeter?
1 millimeter equals 0.03937008 inches.
How do I convert inches to millimeters?
Use the formula mm = in × 25.4.
What is 10 inches in millimeters?
10 inches equals 254 millimeters.