Speed converter

20 converters — choose what you want to convert from.

Speed is measured in km/h in most of the world, but mph (miles per hour) is used in the US, UK, and several other countries. Knots are standard in maritime and aviation, while m/s is used in scientific and technical contexts.

Common situations: GPS speed display in mph during travel, wind speed in a forecast, or calculating travel time from a top speed.