1 millimeter = 0.0393701 inches
Convert millimeters to inches.
Both directions on one page — swap the units and the whole thing runs backwards.
Type a value, or “5cm to in”
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The formula
in = mm × 0.0393701
Worked through with a real value: 10 millimeters = 0.393701 inches.
Going the other way: mm = in × 25.4, so 1 inch = 25.4 millimeters.
What each unit is
- millimeter mm
- A thousandth of a metre, and the working unit of engineering drawings, rainfall and camera focal lengths.
- inch in
- Exactly 2.54 centimetres since the international agreement of 1959. Screens, pipes, paper and tyres are still sized in them.
Conversion tables
| millimeters (mm) | inches (in) |
|---|---|
| 1 | 0.0393701 |
| 2 | 0.0787402 |
| 3 | 0.11811 |
| 4 | 0.15748 |
| 5 | 0.19685 |
| 6 | 0.23622 |
| 7 | 0.275591 |
| 8 | 0.314961 |
| 9 | 0.354331 |
| 10 | 0.393701 |
| 20 | 0.787402 |
| 25 | 0.984252 |
| 50 | 1.9685 |
| 75 | 2.95276 |
| 100 | 3.93701 |
| inches (in) | millimeters (mm) |
|---|---|
| 1 | 25.4 |
| 2 | 50.8 |
| 3 | 76.2 |
| 4 | 101.6 |
| 5 | 127 |
| 6 | 152.4 |
| 7 | 177.8 |
| 8 | 203.2 |
| 9 | 228.6 |
| 10 | 254 |
| 20 | 508 |
| 25 | 635 |
| 50 | 1270 |
| 75 | 1905 |
| 100 | 2540 |
Questions
How many inches are in a millimeter?
1 millimeter = 0.0393701 inches.
How do I convert millimeters to inches?
Use in = mm × 0.0393701. For example, 10 millimeters = 0.393701 inches.
How many millimeters are in one inch?
1 inch = 25.4 millimeters.
What is 10 millimeters in inches?
10 millimeters = 0.393701 inches.
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