Speed Converter

Convert between km/h, m/s, mph, knots, ft/s and Mach — instantly.

Value

From Kilometers per hour (km/h) Meters per second (m/s) Miles per hour (mph) Knots (kn) Feet per second (ft/s) Mach (at sea level)

To Kilometers per hour (km/h) Meters per second (m/s) Miles per hour (mph) Knots (kn) Feet per second (ft/s) Mach (at sea level)

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Enter a value to convert

Quick reference:
1 m/s = 3.6 km/h = 2.236936 mph = 1.943844 kn = 3.280840 ft/s
Mach 1 ≈ 343 m/s (1234.8 km/h) at sea level, 15 °C
Speed of light ≈ 299,792,458 m/s

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