Speed Converter
Kilometers per hour, miles per hour, meters per second, knots.
The speed converter translates values between meters per second (m/s), kilometers per hour (km/h), miles per hour (mph), knots (kn), and feet per second. Type a number into any field and the other units update instantly.
Converting speed comes up when reading foreign car specs and speedometers (mph in the US and UK), in aviation and shipping (knots — nautical miles per hour), and in sports and physics (m/s). Reference points: 1 km/h ≈ 0.278 m/s, 1 mph ≈ 1.609 km/h, 1 knot ≈ 1.852 km/h. For example, a 60 mph limit is roughly 97 km/h.
Calculations go through meters per second as a base unit, so any pair converts precisely. Everything runs right in your browser, with no data sent anywhere.