Speed Converter
Convert between km/h, mph, knots, meters per second, feet per second and Mach, plus the speed of light and the ridiculous but real furlong per fortnight.
Popular speed conversions
- Miles per hour to kilometers per hour
- Kilometers per hour to miles per hour
- Meters per second to kilometers per hour
- Kilometers per hour to meters per second
- Knots to miles per hour
- Knots to kilometers per hour
- Miles per hour to meters per second
- Mach to kilometers per hour
- Feet per second to miles per hour
- Speed of light to kilometers per hour
Common units
| Unit | Symbol | Value in meters per second |
|---|---|---|
| meter per second | m/s | 1 m/s |
| kilometer per hour | km/h | 0.2777777778 m/s |
| mile per hour | mph | 0.44704 m/s |
| knot | kn | 0.5144444444 m/s |
| foot per second | ft/s | 0.3048 m/s |
| Mach | Ma | ≈ 340.294 m/s |
| speed of light | c | 299,792,458 m/s |
Other units
| Unit | Symbol | Value in meters per second |
|---|---|---|
| centimeter per second | cm/s | 0.01 m/s |
| millimeter per second | mm/s | 0.001 m/s |
| kilometer per second | km/s | 1,000 m/s |
| kilometer per minute | km/min | 16.66666667 m/s |
| meter per minute | m/min | 0.01666666667 m/s |
| inch per second | in/s | 0.0254 m/s |
| foot per minute | ft/min | 0.00508 m/s |
| mile per second | mi/s | 1,609.344 m/s |
Historical and traditional units
| Unit | Symbol | Value in meters per second |
|---|---|---|
| furlong per fortnight | fur/ftn | 0.0001663095238 m/s |