Inches to Millimeters: the quick answer
1 in = 25.4 mm
1 inch equals 25.4 millimeters
To convert inches to millimeters, multiply the value by 25.4. To go the other way, multiply millimeters by 0.0393701 to get inches.
To convert inches to millimeters, multiply the value by 25.4. To go the other way, multiply millimeters by 0.0393701 to get inches.
| 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 |
| 12 in | 304.8 mm |
| 14 in | 355.6 mm |
| 15 in | 381 mm |
| 20 in | 508 mm |
| 21 in | 533.4 mm |
| 24 in | 609.6 mm |
| 25 in | 635 mm |
| 30 in | 762 mm |
| 40 in | 1,016 mm |
| 50 in | 1,270 mm |
| 60 in | 1,524 mm |
| 75 in | 1,905 mm |
| 80 in | 2,032 mm |
| 100 in | 2,540 mm |
| 200 in | 5,080 mm |
| 250 in | 6,350 mm |
| 300 in | 7,620 mm |
| 400 in | 10,160 mm |
| 500 in | 12,700 mm |
| 750 in | 19,050 mm |
| 1,000 in | 25,400 mm |
Inch (in). The inch is an imperial and US customary unit equal to exactly 25.4 millimeters, used for screen sizes, pipes and tyres.
Millimeter (mm). A millimeter is one thousandth of a meter, used for small measurements such as thickness and rainfall.
There are 25.4 millimeters in one inch.
Multiply the number of inches by 25.4. For example, 10 inches equal 254 millimeters.
One millimeter equals 0.0393701 inches.
304.8 millimeters. Other common values: 5 inches = 127 millimeters and 100 inches = 2,540 millimeters.