Miles per hour: conversions & definition
This speed uses the international mile of 1,609.344 meters per hour. It differs from knots, which use nautical miles per hour.
Choose the unit you need
Each row converts one mph. Open a converter to enter any value and see its formula, worked example and reference table. Results below are rounded to 10 significant digits.
| Convert to | Equivalent value | Calculator |
|---|---|---|
| Meters per second (m/s) | ≈ 0.44704 | Convert mph to m/s |
| Kilometers per hour (km/h) | ≈ 1.609344 | Convert mph to km/h |
| Feet per second (ft/s) | ≈ 1.466666667 | Convert mph to ft/s |
| Feet per minute (ft/min) | ≈ 88 | Convert mph to ft/min |
| Knots (kn) | ≈ 0.8689762419 | Convert mph to kn |
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Choose units that represent the same quantity and preserve the measurement conditions. A scale conversion changes the number and unit together; it does not change the physical amount or improve the accuracy of your measurement.
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