Velocity & Speed Standards
Speed is the scalar quantity that describes the rate at which an object covers distance. Across different regions, traffic signs use either Kilometers per Hour (km/h) or Miles per Hour (mph), while marine and aviation sectors measure in Knots.
Road Traffic
Kilometers per Hour (km/h) used in most of the world; Miles per Hour (mph) used in USA and UK.
Scientific & Maritime
Meters per second (m/s) in physics; Knots (kn = 1 nautical mile/hr) in sailing and aviation.
Frequently Asked Questions
What is 60 mph in km/h?
60 mph is equal to approximately 96.56 km/h.
What is the speed of sound in m/s and km/h?
The speed of sound in dry air at 20 °C is approximately 343 m/s (1,235 km/h or 767 mph).