Speed Converter
Convert speed and velocity between m/s, km/h, mph, knots, Mach, and the speed of light
All processing happens in your browser. No data is uploaded.
Speed Converter
Convert speed and velocity between m/s, km/h, mph, knots, Mach, and the speed of light
🔒All processing happens in your browser. No data is uploaded.
Meters per Second (m/s)
Kilometers per Hour (km/h)
Miles per Hour (mph)
Feet per Second (ft/s)
Knots (kn)
Mach (at sea level) (Mach)
Speed of Light (c)
Conversion Formulas
1 km/h = 1/3.6 m/s
1 mph = 0.44704 m/s
1 ft/s = 0.3048 m/s
1 kn = 0.514444 m/s
Mach 1 = 340.29 m/s
c = 299,792,458 m/s