Convert Inches to Millimeters
in to mm · 1 in = 25.4 mm
The formula
Millimeters = Inches × 25.4To convert inches to millimeters, multiply by 25.4. One inch equals 25.4 millimeters.
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 |
| 50 in | 1270 mm |
| 100 in | 2540 mm |
| 1000 in | 25400 mm |
Need the other direction? Convert Millimeters to Inches.
Frequently asked questions
How many millimeters are in a inch?
There are 25.4 millimeters in one inch.
How do you convert inches to millimeters?
Multiply the number of inches by 25.4 to get millimeters. For example, 127 mm = 5 in.
What is 10 inches in millimeters?
10 in = 254 mm.
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