Inches to Millimeters Converter
1 inch = 25.4 millimeters
1 millimeter = 0.03937008 inches
How to convert inches to millimeters
To convert inches to millimeters, multiply the value in inches by 25.4.
mm = in × 25.4
Example: 10 in × 25.4 = 254 mm
Inches to Millimeters conversion table
| Inch (in) | Millimeter (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 |
| 12 in | 304.8 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 |
| 60 in | 1,524 mm |
| 70 in | 1,778 mm |
| 75 in | 1,905 mm |
| 80 in | 2,032 mm |
| 90 in | 2,286 mm |
| 100 in | 2,540 mm |
| 150 in | 3,810 mm |
| 200 in | 5,080 mm |
| 250 in | 6,350 mm |
| 500 in | 12,700 mm |
| 1,000 in | 25,400 mm |
About these units
Inch (in)
The inch (in) is a unit of length used in both the imperial and US customary systems. 1 inch equals 0.0254 meters. This value is exact by definition.
Millimeter (mm)
The millimeter (mm) is a unit of length in the International System of Units (SI). 1 millimeter equals 0.001 meters. This value is exact by definition.
Frequently asked questions
What is 1 inch in millimeters?
1 inch equals 25.4 millimeters.
How do I convert inches to millimeters?
To convert inches to millimeters, multiply the value in inches by 25.4. Example: 10 in × 25.4 = 254 mm
What is 10 in in millimeters?
10 inches equals 254 millimeters.