How to use the Speed Converter
- Enter the value to convert.
- Choose the unit you have and the unit you want.
- Press Convert. The table below shows the value in every unit.
Formula
Every unit is defined by its exact size in metre per seconds. To convert, multiply by the “from” factor and divide by the “to” factor.
| Unit | In metre per seconds |
|---|---|
| Metre per second (m/s) | 1 |
| Kilometre per hour (km/h) | 0.277777777778 |
| Mile per hour (mph) | 0.44704 |
| Knot (kn) | 0.514444444444 |
| Foot per second (ft/s) | 0.3048 |
| Mach (sea level, 15 °C) | 340.29 |
Examples
- 100 km/h = 62.14 mph.
- 30 knots = 55.56 km/h.
Frequently asked questions
Why is Mach shown at sea level?
The speed of sound depends on air temperature. This uses 340.29 m/s, its value at 15 °C at sea level.