Speed Converter

Convert between mph, km/h, m/s, knots

How to use

1. Enter a speed and choose its unit.
2. Select the unit to convert to.
3. See the converted speed instantly.

Why use this tool

• Common units: Convert between km/h, mph, m/s, knots, and more.
• Instant: Results update live as you type.
• 100% private: Everything runs in your browser. Your data is never uploaded to a server, so it's safe for confidential content.

Frequently asked questions

Which speed units are supported?

Kilometres per hour, miles per hour, metres per second, and knots, among others.

What's a knot?

One knot is one nautical mile per hour, used in aviation and shipping. The tool converts it to everyday units for you.

Is it private?

Yes. Conversions run in your browser.

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