Millimeter to Inch (mm → in)
Convert millimeter to inch instantly. The conversion factor below is exact by international definition.
Realtime·length·SI
Exact
mm
× 0.0394
in
0.03937
Precision [auto]
6
📐mm to in formulaExact
in = mm × 0.03937007874
Inverse: mm = in × 25.4
Worked example: 1 mm = 0.03937007874 in
ℹ️About these units
Millimeter (mm)
Inch (in)
Source: NIST: 1 in = 0.0254 m exact.
📊Reference table: mm → in
| Millimeter (mm) | Inch (in) |
|---|---|
| 1 | 0.03937 |
| 2 | 0.07874 |
| 5 | 0.19685 |
| 10 | 0.393701 |
| 15 | 0.590551 |
| 20 | 0.787402 |
| 25 | 0.984252 |
| 50 | 1.9685 |
| 100 | 3.937 |
| 250 | 9.8425 |
| 500 | 19.685 |
| 750 | 29.5276 |
| 1,000 | 39.3701 |
Want a downloadable CSV? Append ?format=csv to the API /api/v1/table endpoint.
🔁Reverse & related
🔌API & widget
GET https://convertnavi.com/api/v1/convert?value=10&from=millimeter&to=inchEmbed this converter
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