Speed converter
Convert km/h, mph, metres per second, knots and feet per second.
How this calculator works
Everything converts through metres per second: 1 km/h = 1/3.6 m/s, 1 mph = 0.44704 m/s, 1 knot = 1,852 m per hour.
Worked example: 100 km/h = 62.14 mph = 27.78 m/s. At 100 km/h you cover about 28 metres every second, which is worth remembering when you think about following distances.
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