All Tools VerseSpeed Converter - km/h, mph, m/s, Knots
Free speed converter. Switch between km/h, mph, m/s, knots and ft/s instantly. Runs in your browser, private and offline.
- Runs in your browser
- Nothing uploaded
- Free, no sign-up
Convert speed between kilometers per hour, miles per hour, meters per second, knots and feet per second. Updates instantly in your browser.
How to Use Speed Converter - km/h, mph, m/s, Knots
- Enter your value. Type the speed you want to convert in the Value box.
- Pick the From unit. Choose the unit your value is in, such as kilometers per hour.
- Pick the To unit. Choose the unit you want the answer in, such as miles per hour. Use the swap button to flip them.
- Read the result. The converted value shows instantly, with the full formula below it.
- See every unit. The table lists your value in all speed units at once, and you can copy the result or a share link.
Frequently Asked Questions
How do I convert km/h to mph?
Divide the kilometers per hour by 1.609344, since one mile is 1.609344 kilometers. For example, 100 km/h is about 62.1 mph. The tool shows the exact value.
How fast is one knot?
One knot is one nautical mile per hour, which equals 1.852 km/h or about 1.151 mph. Knots are used in shipping and aviation.
How do I convert m/s to km/h?
Multiply meters per second by 3.6 to get kilometers per hour. For example, 10 m/s equals 36 km/h.
Are these conversions exact?
Yes. They use the official definitions, such as one mile per hour being exactly 0.44704 meters per second, so the results are precise.
Is my data sent anywhere?
No. The conversion runs entirely in your browser, so your numbers never leave your computer and it works offline once loaded.
Can I compare several speed units?
Yes. The table converts your value into every speed unit at once, so you can read m/s, km/h, mph and knots together.
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