Speed Converter
Convert speed units — kilometers per hour, miles per hour, meters per second, feet per second, knots and Mach. Type a value to see the result instantly, together with a table of every other unit.
This tool runs entirely in your browser.
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How to use the Speed Converter
- 1Enter a value.
- 2Choose the unit to convert from and to (use ⇄ to swap).
- 3Read the result, or scan the table for every unit at once.
What is the Speed Converter?
To convert m/s to km/h multiply by 3.6. One knot is one nautical mile (1,852 m) per hour.
Results show up to 10 significant digits; very large or small values switch to scientific notation.
Frequently asked questions
How fast is 100 km/h in mph?
About 62.1 mph.
Is the Speed Converter free and private?
Yes. The Speed Converter is free, needs no account, and runs entirely in your browser. What you type is never sent to a server or stored.
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