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Speed converters

12 converters. Miles per hour, kilometers per hour, knots and more, each with the formula and the math worked out with your numbers.

Driving & running

Miles per hour to kilometers per hour mph → km/h 60 mph = 96.56 km/h Kilometers per hour to miles per hour km/h → mph 100 km/h = 62.14 mph Meters per second to kilometers per hour m/s → km/h 10 m/s = 36 km/h Kilometers per hour to meters per second km/h → m/s 36 km/h = 10 m/s Meters per second to miles per hour m/s → mph 10 m/s = 22.37 mph Miles per hour to meters per second mph → m/s 30 mph = 13.41 m/s Feet per second to miles per hour ft/s → mph 100 ft/s = 68.18 mph Miles per hour to feet per second mph → ft/s 60 mph = 88 ft/s

Boats & planes

Knots to miles per hour kn → mph 20 kn = 23.02 mph Miles per hour to knots mph → kn 50 mph = 43.45 kn Knots to kilometers per hour kn → km/h 20 kn = 37.04 km/h Kilometers per hour to knots km/h → kn 50 km/h = 27 kn

Speed units at a glance

Unit Symbol In meters per second Defined as
Meter per second m/s 1 3.6 km/h
Kilometer per hour km/h 0.277778 1,000 m / 3,600 s
Mile per hour mph 0.44704 1.609344 km/h
Foot per second ft/s 0.3048 0.3048 m/s
Knot kn 0.514444 1.852 km/h