Utilities
Speed Converter
Convert a speed between meters per second, kilometers per hour, miles per hour, knots, and feet per second locally in your browser.
Convert a speed between meters per second, kilometers per hour, miles per hour, knots, and feet per second. Zero is a valid speed.
Conversions run locally in your browser; your speed is not uploaded or stored.
Convert one speed into the units you need.
Enter a non-negative speed and choose its unit to see the equivalent meters per second, kilometers per hour, miles per hour, knots, and feet per second. Zero is valid. It runs locally in your browser, so your value is not uploaded or stored.
Frequently Asked Questions
Everything you need to know about this tool, how it works, and privacy.
Which speed units can I convert?
Enter a speed in meters per second, kilometers per hour, miles per hour, knots, or feet per second. The converter returns the equivalent value in all five units using 1 mph = 0.44704 meters per second, 1 km/h = 1000/3600 meters per second, 1 knot = 1852/3600 meters per second, and 1 ft/s = 0.3048 meters per second.
Can I convert zero or decimal speeds?
Yes. Zero is a valid speed, and decimal values are accepted. Negative speeds are rejected because a speed cannot be less than zero. Results show up to six decimal places when needed.
What happens with very large speeds?
The converter shows an error when the entered speed is too large to convert safely, instead of returning an unreliable rounded result.
Does my speed leave my browser?
No. The conversion and copy action run locally in your browser. CodeASystem does not upload or store the value you enter.