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Speed Converter

Convert speed units between Miles per Hour (mph), Kilometers per Hour (km/h), and Knots.

Convert Speed Limits and Velocity

If you're driving in a foreign country or following international sports, speed measurements can be confusing. Cars in the US display speed in Miles Per Hour (mph), while European cars use Kilometers Per Hour (km/h). Aviation and nautical contexts use Knots.

Our Speed Converter tool effortlessly translates any speed unit into all the others simultaneously. Type in a value, select your unit, and instantly view the conversion for mph, km/h, m/s, and knots.

Goulennoù graet alies

100 Kilometers per hour is roughly equal to 62 Miles per hour.

A knot is one nautical mile per hour. It is commonly used in maritime and aviation. One knot is equal to 1.15 mph or 1.85 km/h.

To convert meters per second (m/s) to kilometers per hour (km/h), simply multiply the speed by 3.6.