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Speed Converter
km/h, mph, knots, meters per second, Mach
Speed Converter
About the speed converter
This converter handles 11 speed units. Enter a value in either field and the other updates instantly — there is no button to press and nothing to submit. Use the swap control to reverse the direction of the conversion.
All factors are stored against a single base unit
(
Meter/second) and applied in one step, so converting A → B
never accumulates rounding error from an intermediate hop.Quick reference table
| Mile/hour | Kilometer/hour |
|---|---|
| 1 mph | 1.609344 km/h |
| 2 mph | 3.218688 km/h |
| 5 mph | 8.04672 km/h |
| 10 mph | 16.09344 km/h |
| 20 mph | 32.18688 km/h |
| 50 mph | 80.4672 km/h |
| 100 mph | 160.9344 km/h |
| 500 mph | 804.672 km/h |
| 1000 mph | 1609.344 km/h |
All 11 units
| Unit | Equals in Meter/second |
|---|---|
| Meter/second (m/s) | 1 |
| Kilometer/hour (km/h) | 0.2777777778 |
| Mile/hour (mph) | 0.44704 |
| Knot (kn) | 0.5144444444 |
| Foot/second (ft/s) | 0.3048 |
| Inch/second (in/s) | 0.0254 |
| Mile/minute | 26.8224 |
| Kilometer/minute | 16.66666667 |
| Kilometer/second | 1000 |
| Mach (at 20°C) | 343 |
| Speed of light | 299792458 |