Speed Converter
Convert between different speed units including miles per hour, kilometers per hour, meters per second, feet per second, knots, Mach, speed of light, and more.
Common Speed Conversions
About Speed Conversion
Speed is a measurement of distance traveled per unit of time. The International System of Units (SI) base unit for speed is meters per second (m/s). Common speed units include miles per hour (mph), kilometers per hour (kph), meters per second (m/s), feet per second (ft/s), knots, Mach, speed of light, and more.
Popular conversions: miles per hour to kilometers per hour, kilometers per hour to miles per hour, meters per second to kilometers per hour, knots to miles per hour, and vice versa.