Convert Millimeters to Inches
Convert millimeters to inches free and instantly. 1 millimeter = 0.03937 in. Exact formula, worked example and a handy reference table.
To convert millimeters to inches, multiply by 0.03937 (1 millimeter = 0.03937 inches). For example, 10 millimeters = 0.393701 inches.
Why convert millimeters to inches?
Both millimeters and inches measure length, so converting between them is a simple multiplication: one millimeter equals 0.03937 inches. Type any value into the converter above for an instant answer, or use the formula and reference table below.
Millimeters to inches formula
Inches = millimeters × 0.03937
Worked example: 10 millimeters = 0.393701 inches.
Millimeters to inches conversion table
| Millimeters (mm) | Inches (in) |
|---|---|
| 1 | 0.03937 |
| 2 | 0.07874 |
| 3 | 0.11811 |
| 5 | 0.19685 |
| 10 | 0.393701 |
| 20 | 0.787402 |
| 50 | 1.968504 |
| 100 | 3.937008 |
Millimeters to Inches — frequently asked questions
How many inches are in a millimeter?
One millimeter equals 0.03937 inches. To convert any amount, multiply the number of millimeters by 0.03937.
How do you convert millimeters to inches?
Multiply by 0.03937: Inches = millimeters × 0.03937. For example, 10 millimeters = 0.393701 inches.
How do I convert inches back to millimeters?
Do the reverse conversion — see our inches-to-millimeters converter for the formula and an instant calculator.
Is this millimeters-to-inches converter free?
Yes — it's completely free, instant and runs in your browser with no sign-up. Nothing you type is uploaded.