ffee
All tools
Speed Converter
Convert speed between metres per second, km/h, mph, feet per second, knots and mach.
Convert speed
Result: —
All units for this value:
How to use the Speed Converter
- Enter the speed you want to convert.
- Choose the units to convert from and to.
- See the converted value plus every other unit instantly.
Features
- Metres per second, km/h, mph, ft/s, knots and mach
- Instant conversion as you type
- Full list of units for the same value
- Runs locally, no uploads
Advertisement
Frequently Asked Questions
Common questions about the free online speed converter.
Enter the speed, pick km/h as the from unit and mph as the to unit. One kilometre per hour is
about 0.6214 miles per hour.
Multiply metres per second by 3.6. The converter does this for you and also shows the value
in every other supported unit.
A knot is one nautical mile per hour, which is about 1.852 km/h. It is the standard unit for
speed in aviation and shipping.
Mach 1 is the speed of sound in air at sea level, about 340.29 metres per second or 1225
km/h. Mach 2 is twice that speed.
Metres per second, kilometres per hour, miles per hour, feet per second, knots and mach.
Yes, the converter handles any value, including small fractions of a metre per second and
hypersonic speeds above mach 5.
The converter uses standard international conversion factors and rounds the displayed result
to six decimal places.
No, every conversion is calculated locally in your browser.
Yes, the tool is fully responsive and works on phones, tablets and desktops.
Last updated: October 10, 2026