Speed Converter
Enter a speed in any unit to see it in every other unit at once.
How to use it
- Enter a speed Type the value you want to convert.
- Choose the starting unit Select it in the "From" menu.
- Read the conversions All other units update instantly.
Examples
| 60 mph | 96.56 km/h |
|---|---|
| 100 km/h | 27.78 m/s |
| 1 knot | 1.852 km/h |
About this tool
Speed converters are handy when a car’s dashboard, a weather report or a boat’s instruments use a different unit from the one you think in. This tool links the five most common: metres per second (the SI unit), kilometres per hour, miles per hour, feet per second and knots.
Each conversion uses exact length and time definitions — a mile is 1,609.344 m and an hour is 3,600 s — so the results are precise. Everything runs in your browser.
Frequently asked questions
How do I convert mph to km/h?
Multiply by 1.609344. For example, 60 mph equals 96.56 km/h.
What is a knot?
One knot is one nautical mile per hour, or exactly 1.852 km/h. It is used in aviation and shipping.
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Updated June 12, 2026