Speed converters
Convert km/h, mph, m/s, and knots. A knot is one nautical mile (1,852 m) per hour. Useful for road limits, running pace, and marine or aviation notes.
Area, volume (US liquid gallons unless a page says otherwise), speed, data, time, energy, pressure, power, angle, and frequency families.
Speed Converter
Convert speed between kilometers per hour, miles per hour, meters per second, and knots, whether for road speeds, physics problems, or marine and aviation speeds.
KM/H to MPH Converter
Convert kilometers per hour (km/h) to miles per hour (mph). One kilometer per hour equals 0.621371 miles per hour, so multiply a value in kilometers per hour by 0.621371 to get miles per hour.
MPH to KM/H Converter
Convert miles per hour (mph) to kilometers per hour (km/h). One mile per hour equals 1.60934 kilometers per hour, so multiply a value in miles per hour by 1.60934 to get kilometers per hour.
MPH to M/S Converter
Convert miles per hour (mph) to meters per second (m/s). One mile per hour equals 0.44704 meters per second, so multiply a value in miles per hour by 0.44704 to get meters per second.
M/S to MPH Converter
Convert meters per second (m/s) to miles per hour (mph). One meter per second equals 2.23694 miles per hour, so multiply a value in meters per second by 2.23694 to get miles per hour.
Knots to KM/H Converter
Convert knots (kn) to kilometers per hour (km/h). One knot equals 1.852 kilometers per hour, so multiply a value in knots by 1.852 to get kilometers per hour.
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