Speed

Convert between different speed and velocity units including mph, km/h, m/s, knots, and other measurements of rate of motion.

Speed Unit Converter

Speed Categories

Common Speed Conversions (pages 2)
All Speed Conversions (pages 2)

Popular Speed Conversions

Kilometer/hour to Meter/second Meter/second to Kilometer/hour Kilometer/hour to Mile/hour Mile/hour to Kilometer/hour Kilometer/hour to Knot Knot to Kilometer/hour Meter/second to Mile/hour Mile/hour to Meter/second Knot to Meter/second Meter/second to Knot Knot to Mile/hour Mile/hour to Knot

About Speed Conversions

Speed is distance per unit of time. Road speeds are usually given in km/h or mph, aviation and shipping use knots, science uses metres per second, and high-speed flight is often quoted as a Mach number. Choose common speeds or the full list below.

Convert between different speed and velocity units including mph, km/h, m/s, knots, and other measurements of rate of motion.