Speed Converter
Convert between km/h, mph, m/s, knots, Mach and speed of light
Enter speed to convert
Speed Reference Chart
Speed of Sound (Mach 1)
≈ 340.29 m/s≈ 1224.1 km/h≈ 761 mph≈ 661.5 knots
100 km/h
= 62.137 mph= 27.778 m/s= 53.996 knots= 0.0816 Mach
Speed of Light
≈ 299,792,458 m/s≈ 1,079,252,848 km/h≈ 670,616,629 mph