Speed Converter
Convert speed units: km/h, mph, m/s, knots and more. Free, fast and private.
Your result will appear here.
Enter a value to see the conversion factor.
How to use Speed Converter
- Enter the speed value in the Amount box.
- Choose the unit you are converting from, then the unit you are converting to.
- The result updates as you type — or press Convert. Use Swap to reverse the direction.
- Check the factor shown below the result and the full list of all-unit conversions.
- Press Copy Result to copy the answer.
Note: this tool runs in your browser. Nothing is uploaded.
Frequently Asked Questions
What units can I convert with the Speed Converter?
Kilometres per hour, miles per hour, metres per second and knots — all converted through metres per second as the base unit.
How do I convert km/h to mph?
Multiply km/h by 0.621371. So 100 km/h = 62.1371 mph, and 60 mph = 96.5606 km/h.
Is the Speed Converter free?
Yes, it is 100% free with no sign-up. Your data stays in your browser.
Does it work on mobile?
Yes, it is fully mobile-friendly and works in any modern browser on phone, tablet or computer.