Speed Converter
Free online speed converter. Convert between kilometers per hour, miles per hour, meters per second, knots, feet per second and Mach. Accurate results with step-by-step calculations.
Speed Converters
- Kilometers per Hour to Miles per Hour (km/h to mph)
- Miles per Hour to Kilometers per Hour (mph to km/h)
- Meters per Second to Kilometers per Hour (m/s to km/h)
- Kilometers per Hour to Meters per Second (km/h to m/s)
- Meters per Second to Miles per Hour (m/s to mph)
- Miles per Hour to Meters per Second (mph to m/s)
- Knots to Miles per Hour (kn to mph)
- Miles per Hour to Knots (mph to kn)
- Knots to Kilometers per Hour (kn to km/h)
- Kilometers per Hour to Knots (km/h to kn)
- Meters per Second to Feet per Second (m/s to ft/s)
- Feet per Second to Meters per Second (ft/s to m/s)
- Miles per Hour to Feet per Second (mph to ft/s)
- Feet per Second to Miles per Hour (ft/s to mph)
- Mach to Kilometers per Hour (Mach to km/h)
- Kilometers per Hour to Mach (km/h to Mach)
- Mach to Miles per Hour (Mach to mph)
- Miles per Hour to Mach (mph to Mach)
- Knots to Meters per Second (kn to m/s)
- Meters per Second to Knots (m/s to kn)
Speed Units
Kilometer per Hour (km/h) — Standard speed unit in most countries. Used for road speeds and weather.
Mile per Hour (mph) — Used in the US, UK, and a few other countries for road speed limits.
Meter per Second (m/s) — SI unit of speed. Used in science and physics. 1 m/s = 3.6 km/h.
Knot (kn) — 1 knot = 1 nautical mile per hour = 1.852 km/h. Used in aviation and maritime navigation.
Foot per Second (ft/s) — 1 ft/s = 0.3048 m/s. Used in engineering and ballistics in the US.
Mach — Speed relative to the speed of sound. Mach 1 ≈ 1,234.8 km/h ≈ 767.3 mph at sea level.
See also
SPEED CONVERSION
- Kilometers per Hour to Miles per Hour (km/h to mph)
- Miles per Hour to Kilometers per Hour (mph to km/h)
- Meters per Second to Kilometers per Hour (m/s to km/h)
- Kilometers per Hour to Meters per Second (km/h to m/s)
- Meters per Second to Miles per Hour (m/s to mph)
- Miles per Hour to Meters per Second (mph to m/s)
- Knots to Miles per Hour (kn to mph)
- Miles per Hour to Knots (mph to kn)
- Knots to Kilometers per Hour (kn to km/h)
- Kilometers per Hour to Knots (km/h to kn)
- Meters per Second to Feet per Second (m/s to ft/s)
- Feet per Second to Meters per Second (ft/s to m/s)