Speed Converter
km/h, mph, m/s, knots and mach.
1 km/h =
0.62137119mph
1 km/h in every unit
Metres per second (m/s)0.27777778
Kilometres per hour (km/h)1
Miles per hour (mph)0.62137119
Knot (kn)0.5399568
Feet per second (ft/s)0.91134442
ShowHide the working
- 1Convert via the base unit (ms): 1 km/h → 0.62137119 mph
Formula
speed conversion via a common base unitHow it works
Convert between km/h, mph, m/s, knots and more.
Example
100 km/h is about 62.14 mph.
About the Speed Converter
km/h, mph, m/s, knots and mach. It sits in the Conversion section of NWS Calc, a free collection of calculators that run entirely in your browser. There is no signup, no paywall and no tracking — open the page, enter your numbers, get an answer.
Frequently asked questions
- Is the Speed Converter free to use?
- Yes. Every calculator on NWS Calc is completely free, with no signup, no usage limits and no ads.
- Does my data leave my device?
- No. The Speed Converter runs entirely in your browser using JavaScript. Nothing you type is uploaded, logged or stored on a server.
- Can I use the Speed Converter on my phone?
- Yes. The page is fully responsive and works in any modern mobile or desktop browser — there is nothing to install.
- What else is in Conversion?
- Units, currencies, number bases, roman numerals and numbers to words. You can browse the full Conversion category for related calculators.