Kilometers per Hour to Meters per Second Converter

How to convert Kilometers per Hour to Meters per Second

To convert Kilometers per Hour to Meters per Second, multiply the value in Kilometers per Hour by 0.27777778. For example, 5 km/h = 1.3888889 m/s.

The Kilometers per Hour-to-Meters per Second conversion comes up often in everyday and professional contexts alike. With 1 km/h equal to 0.27777778 m/s, you can use the tool above for any value, or scan the table below for the most common Kilometers per Hour amounts and their Meters per Second equivalents.

Speed conversions are used in driving, sports, aviation, weather, and physics. The most common need is converting between kilometers per hour and miles per hour when traveling between countries.

Understanding Kilometers per Hour and Meters per Second

Most of the world posts speed limits in kilometers per hour, while the US and UK use miles per hour. Meters per second is the scientific standard, and knots (nautical miles per hour) are used in aviation and maritime navigation. A car at 100 km/h is traveling about 62 mph — a conversion worth knowing for any international driver.

How accurate is this conversion?

Speed conversions are exact because they derive directly from exact length and time definitions. Since 1 mile = 1.609344 kilometers exactly, all speed conversions between these units are precise.

All conversion factors on ClearUnits are based on internationally recognised standards (the International System of Units, SI, and official definitions). Factors are reviewed for accuracy and the calculator uses full-precision values, rounding only the displayed result.

Quick reference: common Kilometers per Hour to Meters per Second values

The most frequently searched conversions are 1 Kilometers per Hour = 0.27777778 Meters per Second, 5 Kilometers per Hour = 1.3888889 Meters per Second, 10 Kilometers per Hour = 2.7777778 Meters per Second, and 100 Kilometers per Hour = 27.777778 Meters per Second. The full table further down covers every common value, and the calculator handles any number you need in between.