Handy Units
Speed Converter
km/h, mph, m/s, knots and Mach, for driving, wind and travel.
Common speed conversions
All speed units
| Unit | Symbol | Relation |
|---|---|---|
| Kilometers per hour | km/h | 1 km/h ≈ 0.277778 m/s |
| Meters per second | m/s | — |
| Miles per hour | mph | 1 mph = 0.44704 m/s |
| Knot | kn | 1 kn ≈ 0.514444 m/s |
| Mach (sea level) | Ma | 1 Ma = 340.294 m/s |
| Feet per second | ft/s | 1 ft/s = 0.3048 m/s |
| Kilometers per second | km/s | 1 km/s = 1000 m/s |
| Meters per minute | m/min | 1 m/min ≈ 0.0166667 m/s |
| Centimeters per second | cm/s | 1 cm/s = 0.01 m/s |
| Millimeters per second | mm/s | 1 mm/s = 0.001 m/s |
| Feet per minute | ft/min | 1 ft/min = 0.00508 m/s |
| Inches per second | in/s | 1 in/s = 0.0254 m/s |
| Miles per second | mi/s | 1 mi/s = 1609.344 m/s |
| Speed of light | c | 1 c = 299792458 m/s |