Speed Converter
Convert speed and velocity between the units used in driving, sailing, flying, and physics. This tool supports meters per second, kilometers per hour, miles per hour, knots, and feet per second. Speed limits, wind reports, boat and aircraft speeds, and lab data all use different conventions, and this converter translates cleanly between them using exact factors (one knot is one nautical mile per hour, and a nautical mile is exactly 1852 meters). Pick your source and target units, type a number, and the result appears live as you type. There is no rounding surprise and no need to memorize conversions. It runs entirely in your browser, so it is instant, private, and available offline after the first load.
How to use Speed Converter
- Enter a speed in the unit you have.
- Read the equivalent in every other speed unit.
- Copy the converted speed.
Frequently asked questions
What speed units are supported?
It converts between meters per second, kilometers per hour, miles per hour, knots, and feet per second.
How does it convert km/h to mph?
It uses the exact factor 1 mph equals 1.609344 km/h, so the conversion is precise in both directions.
Is a knot the same as a mile per hour?
No. A knot is one nautical mile per hour, roughly 1.15078 mph, and the tool keeps them separate.
What is Speed Converter?
Convert speed and velocity between the units used in driving, sailing, flying, and physics. This tool supports meters per second, kilometers per hour, miles per hour, knots, and feet per second.
Is Speed Converter free to use?
Yes. Speed Converter is completely free, with no sign-up and no usage limits.
Does Speed Converter work in a web browser?
Yes. Speed Converter runs in any modern web browser. There is nothing to download or install.
Is my data private with Speed Converter?
Yes. Speed Converter runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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Link this tool from a README, doc or site. The badge links back to this page.
[](https://yourhack.ai/speed-converter)