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Unit conversion reference
Convert mph to km/h, m/s, ft/s and knots with a live speed converter, factors and common-value table.
The live converter uses the same standard factor system as MAXScanner’s full Speed Converter.
Speed conversion uses standard unit factors; values below zero are rejected because this calculator is for speed, not signed velocity.
Miles per hour expresses distance in statute miles traveled per hour. It is widely used for road speed in the United States and United Kingdom.
To convert mph, multiply the speed by the factor for the target unit.
These values are calculated from the same factors shown above, so the table is a quick reference rather than a separate set of rounded constants.
| mph | km/h | m/s | ft/s | kn |
|---|---|---|---|---|
| 1 | 1.609344 | 0.44704 | 1.46666667 | 0.86897624 |
| 2 | 3.218688 | 0.89408 | 2.93333333 | 1.73795248 |
| 5 | 8.04672 | 2.2352 | 7.33333333 | 4.34488121 |
| 10 | 16.09344 | 4.4704 | 14.66666667 | 8.68976242 |
| 25 | 40.2336 | 11.176 | 36.66666667 | 21.72440605 |
| 50 | 80.4672 | 22.352 | 73.33333333 | 43.4488121 |
| 100 | 160.9344 | 44.704 | 146.66666667 | 86.89762419 |
Type the number of mile per hours you have.
Pick the unit required by the drawing, form, specification or calculation.
Use the factor or common-value table when you need to double-check the conversion.
Miles per hour expresses distance in statute miles traveled per hour. It is widely used for road speed in the United States and United Kingdom.
To convert mph, multiply the speed by the factor for the target unit.
Yes. Use the live Speed Converter on this page for any supported source and target unit, or open the full converter for the complete unit list.
Open the full Speed Converter for every supported unit in this family. Unit conversion changes how the same measurement is expressed; it does not change the underlying physical quantity.
Open Speed Converter