Speed Converter
Converts speeds between units such as km/h, mph, m/s and knots.
Convert speed
Result
3.6
1 Metres per second (m/s) = 3.6 Kilometres per hour (km/h)
All units
- Metres per second (m/s)
- 1
- Kilometres per hour (km/h)
- 3.6
- Miles per hour (mph)
- 2.236936
- Knots (kn)
- 1.943844
- Feet per second (ft/s)
- 3.28084
How to use this calculator
- Enter the amount you want to convert.
- Choose the unit you have (From) and the unit you want (To).
- Read the result instantly — every other unit is listed too.
How it works
The speed is converted between metres per second, kilometres per hour, miles per hour, knots and feet per second. For reference, 10 m/s = 36 km/h.
Worked example
10 m/s. = 36 km/h ≈ 22.4 mph.
Frequently asked questions
How do I convert km/h to mph?
Multiply km/h by 0.6214 (or divide by 1.609). So 100 km/h ≈ 62 mph.
How accurate are the conversions?
They use standard conversion factors at full device precision, so they're reliable for everyday and professional use.
Does it work offline and stay private?
Yes — the conversion runs entirely in your browser, with no sign-up and nothing sent to a server.
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Cite this tool
Zerdly. (2026). Speed Converter. Retrieved from https://www.zerdly.com/tools/speed-converter/
Speed conversion table
How much one of each unit equals in the others — read each row as “1 [row unit] = …”. All values are exact conversions.
| 1 unit = | m/s | km/h | mph | knots | ft/s |
|---|---|---|---|---|---|
| 1 m/s | 1 | 3.6 | 2.236936 | 1.943844 | 3.28084 |
| 1 km/h | 0.277778 | 1 | 0.621371 | 0.539957 | 0.911344 |
| 1 mph | 0.44704 | 1.609344 | 1 | 0.868976 | 1.466667 |
| 1 knots | 0.514444 | 1.852 | 1.150779 | 1 | 1.68781 |
| 1 ft/s | 0.3048 | 1.09728 | 0.681818 | 0.592484 | 1 |
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.