Top Converters
LengthVolumeTemperatureWeightAreaTimeSpeedPressureEnergyPowerForceAngleElectric currentElectric potentialFrequencyData storageBandwidthFuel consumptionRadioactivity (decay)Radioactivity (eq. dose)

Speed Converters

Speed is the rate at which an object covers distance over time — how far something travels per unit of time. The SI base unit is the meter per second (m/s), used in physics and engineering. Everyday life relies on kilometers per hour (km/h) across most of the world and miles per hour (mph) in the United States and United Kingdom. Aviation and maritime navigation use the knot (nautical miles per hour), inherited from celestial navigation traditions. At the extreme end, the speed of light (c ≈ 299,792,458 m/s) is the universal speed limit in physics and the benchmark against which particle and spacecraft velocities are measured. Speed and velocity are related but distinct: velocity includes direction, speed does not.

Metric Units

Meter per Second (m/s)

Meter per Second to Kilometer per Second (m/s to km/h)Meter per Second to Meter per Hour (m/s to m/s)Meter per Second to Kilometer per Hour (m/s to km/h)
Meter per Second to Foot per Second (m/s to ft/s)Meter per Second to Mile per Second (m/s to mph)Meter per Second to Foot per Hour (m/s to ft/s)
Meter per Second to Mile per Hour (m/s to mph)Meter per Second to Knot (m/s to kn)Meter per Second to Speed of Light (m/s to c)

Kilometer per Second (km/h)

Kilometer per Second to Meter per Second (km/h to m/s)Kilometer per Second to Meter per Hour (km/h to m/s)Kilometer per Second to Kilometer per Hour (km/h to km/h)
Kilometer per Second to Foot per Second (km/h to ft/s)Kilometer per Second to Mile per Second (km/h to mph)Kilometer per Second to Foot per Hour (km/h to ft/s)
Kilometer per Second to Mile per Hour (km/h to mph)Kilometer per Second to Knot (km/h to kn)Kilometer per Second to Speed of Light (km/h to c)

Meter per Hour (m/s)

Meter per Hour to Meter per Second (m/s to m/s)Meter per Hour to Kilometer per Second (m/s to km/h)Meter per Hour to Kilometer per Hour (m/s to km/h)
Meter per Hour to Foot per Second (m/s to ft/s)Meter per Hour to Mile per Second (m/s to mph)Meter per Hour to Foot per Hour (m/s to ft/s)
Meter per Hour to Mile per Hour (m/s to mph)Meter per Hour to Knot (m/s to kn)Meter per Hour to Speed of Light (m/s to c)

Kilometer per Hour (km/h)

Kilometer per Hour to Meter per Second (km/h to m/s)Kilometer per Hour to Kilometer per Second (km/h to km/h)Kilometer per Hour to Meter per Hour (km/h to m/s)
Kilometer per Hour to Foot per Second (km/h to ft/s)Kilometer per Hour to Mile per Second (km/h to mph)Kilometer per Hour to Foot per Hour (km/h to ft/s)
Kilometer per Hour to Mile per Hour (km/h to mph)Kilometer per Hour to Knot (km/h to kn)Kilometer per Hour to Speed of Light (km/h to c)

Imperial Units

Foot per Second (ft/s)

Foot per Second to Meter per Second (ft/s to m/s)Foot per Second to Kilometer per Second (ft/s to km/h)Foot per Second to Meter per Hour (ft/s to m/s)
Foot per Second to Kilometer per Hour (ft/s to km/h)Foot per Second to Mile per Second (ft/s to mph)Foot per Second to Foot per Hour (ft/s to ft/s)
Foot per Second to Mile per Hour (ft/s to mph)Foot per Second to Knot (ft/s to kn)Foot per Second to Speed of Light (ft/s to c)

Mile per Second (mph)

Mile per Second to Meter per Second (mph to m/s)Mile per Second to Kilometer per Second (mph to km/h)Mile per Second to Meter per Hour (mph to m/s)
Mile per Second to Kilometer per Hour (mph to km/h)Mile per Second to Foot per Second (mph to ft/s)Mile per Second to Foot per Hour (mph to ft/s)
Mile per Second to Mile per Hour (mph to mph)Mile per Second to Knot (mph to kn)Mile per Second to Speed of Light (mph to c)

Foot per Hour (ft/s)

Foot per Hour to Meter per Second (ft/s to m/s)Foot per Hour to Kilometer per Second (ft/s to km/h)Foot per Hour to Meter per Hour (ft/s to m/s)
Foot per Hour to Kilometer per Hour (ft/s to km/h)Foot per Hour to Foot per Second (ft/s to ft/s)Foot per Hour to Mile per Second (ft/s to mph)
Foot per Hour to Mile per Hour (ft/s to mph)Foot per Hour to Knot (ft/s to kn)Foot per Hour to Speed of Light (ft/s to c)

Mile per Hour (mph)

Mile per Hour to Meter per Second (mph to m/s)Mile per Hour to Kilometer per Second (mph to km/h)Mile per Hour to Meter per Hour (mph to m/s)
Mile per Hour to Kilometer per Hour (mph to km/h)Mile per Hour to Foot per Second (mph to ft/s)Mile per Hour to Mile per Second (mph to mph)
Mile per Hour to Foot per Hour (mph to ft/s)Mile per Hour to Knot (mph to kn)Mile per Hour to Speed of Light (mph to c)

Nautical Units

Knot (kn)

Knot to Meter per Second (kn to m/s)Knot to Kilometer per Second (kn to km/h)Knot to Meter per Hour (kn to m/s)
Knot to Kilometer per Hour (kn to km/h)Knot to Foot per Second (kn to ft/s)Knot to Mile per Second (kn to mph)
Knot to Foot per Hour (kn to ft/s)Knot to Mile per Hour (kn to mph)Knot to Speed of Light (kn to c)

Astronomical Units

Speed of Light (c)

Speed of Light to Meter per Second (c to m/s)Speed of Light to Kilometer per Second (c to km/h)Speed of Light to Meter per Hour (c to m/s)
Speed of Light to Kilometer per Hour (c to km/h)Speed of Light to Foot per Second (c to ft/s)Speed of Light to Mile per Second (c to mph)
Speed of Light to Foot per Hour (c to ft/s)Speed of Light to Mile per Hour (c to mph)Speed of Light to Knot (c to kn)

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