Speed Unit Converter
Convert a speed between km/h, mph, m/s, knots and ft/s, seeing every other unit at once. Useful for travel, sport and physics. Calculated in your browser.
- 100% free
- Private & safe
- Runs in your browser
Why use Speed Unit Converter?
Speed Unit Converter converts instantly and accurately in your browser, showing every unit or format side by side so you can copy the one you need.
- Runs instantly in your browser — nothing to install, nothing uploaded.
- Completely free, with no account, no watermarks and no usage limits.
- Units: km/h, mph, m/s, knots, ft/s
- Enter a speed.
- Works on any device — desktop, tablet and phone — and is fully keyboard accessible.
How to use Speed Unit Converter
- Enter a speed.
- Choose its unit.
- See all other units.
- Copy what you need.
Examples
- 100 km/h is about 62 mph.
- Converting boat speed to knots.
Supported formats & limits
- Units: km/h, mph, m/s, knots, ft/s
Limitations
- Rounded for readability.
Frequently asked questions
km/h to mph?
Divide by about 1.609.
Uploaded?
No — local only.
Knots?
Yes — nautical miles per hour.
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