Speed Converter
Convert speed units — km/h, mph, m/s, knots, and more.
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How to convert speed
- Type the value you want to convert.
- Pick the unit you're converting from.
- Read the result in every other unit, and copy the one you need.
Features
- Everyday and nautical units: km/h, mph, m/s, knots, and ft/s.
- Every unit updates instantly as you type — no button to press.
- Free, no sign-up, and it all runs in your browser.
Frequently asked questions
- How do I convert km/h to mph?
- Divide by 1.609344. For example, 100 km/h is about 62.14 mph. Type the value and read the mph row.
- What is a knot?
- One knot is one nautical mile per hour, about 1.852 km/h, used for boats and aircraft.
- How fast is 1 m/s in km/h?
- One meter per second is 3.6 km/h. Enter 1 and pick m/s to check.
- Does my input get sent to a server?
- No. The conversion runs entirely in your browser; nothing you type leaves your device.