Speed Converter
Convert between km/h, mph, m/s and knots.
Result
Results are estimates for general information only and are not professional advice.
Speed conversion
Speed can be measured in kilometers per hour, miles per hour, meters per second or knots. This converter switches between all four using exact conversion factors — useful for driving, aviation, sailing and science.
Frequently Asked Questions
What is the Speed Converter?
Convert between km/h, mph, m/s and knots. It runs instantly in your browser and is completely free to use.
What do I need to enter to use the Speed Converter?
The Speed Converter asks for the following values (3): Value, From, To. Fill them in and the result appears immediately — the calculation runs on your own device, so nothing you type is sent to a server.
How accurate is the Speed Converter?
The Speed Converter uses standard, widely-accepted formulas, so its figures are reliable estimates for everyday planning. They are not a substitute for advice from a qualified professional.
Is the Speed Converter free, and do I need an account?
Yes. The Speed Converter — and every other calculator on Calculatis — is completely free, with no registration, no download and no limit on how often you use it.