Millimeters to Inches
Convert millimeters (mm) to inches (in). Live results, batch values, CSV export, formula and examples. Free, no sign-up.
Runs on your device · no data upload
Up to 500 values. Calculations stay on this device. Decimal point: dot. Results use floating-point arithmetic and the selected display precision.
Results
1 values converted
| row | input | from | result | to | error |
|---|---|---|---|---|---|
| 1 | 1 | mm | 0.0393700787402 | in | — |
International inch and foot definitions are used. A nautical mile is exactly 1,852 meters.
Raw response
[
{
"row": 1,
"input": 1,
"from": "mm",
"result": "0.0393700787402",
"to": "in"
}
]How to convert millimeters to inches
Enter one value or paste one value per line. Change precision, swap units, then copy or export the results. Invalid values are reported individually.
result = (value × 0.001 + 0 − 0) ÷ 0.0254
International inch and foot definitions are used. A nautical mile is exactly 1,852 meters.
| Millimeters (mm) | Inches (in) |
|---|---|
| 0 | 0 |
| 1 | 0.0393700787402 |
| 10 | 0.393700787402 |
| 100 | 3.93700787402 |
Reference: NIST unit conversion factors. Decimal and binary storage prefixes are distinct; rounded display values do not change the underlying calculation.