Speed Converter: Convert km/h, mph and Metres per Second
Convert common speed units such as kilometres per hour, miles per hour, and metres per second.
A Speed Converter changes speed measurements between units used in travel, science, sport, and engineering.
Useful Conversion Factors
- 1 km/h тЙИ 0.621371 mph
- 1 mph тЙИ 1.60934 km/h
- 1 m/s = 3.6 km/h
- 1 knot = 1.852 km/h
How to Use It
- Enter the speed value.
- Choose the unit you are converting from.
- Choose the unit you want.
- Review the converted number and unit.
Example
A speed of 90 km/h is approximately 55.92 mph. To convert 20 m/s to km/h, multiply by 3.6 to get 72 km/h.
Keep Context in Mind
Speed differs from velocity, which includes direction. For everyday vehicle use, follow local speed-limit signs and the units displayed by your vehicle or navigation system.
Rounding
Conversion results may be rounded for display. For technical work, retain enough decimal places for the required precision and use the same unit system throughout a calculation.
Explore More on Calcusite AI
Use the relevant calculator on Calcusite AI to test different values and compare scenarios. Results are estimates based on the inputs and assumptions you provide.