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🚀 Speed Converter
Convert between km/h, mph, metres per second, knots and feet per second with a full comparison table.
About this Speed Converter
This speed converter translates between road speeds (km/h and mph), the scientific unit m/s, knots used at sea and in aviation, and feet per second. To go from km/h to m/s you divide by 3.6 — the converter does it instantly and shows every unit in one table.
How to use it
- Enter the speed.
- Pick the unit it is in and the one you need.
- Click Convert to see the answer and the full table.
Example
100 km/h is 62.1371 mph and 27.7778 m/s; a motorway limit of 70 mph is 112.654 km/h.
Frequently asked questions
What is a knot?
One nautical mile per hour. Ships and aircraft use it because the nautical mile matches the Earth's grid: 1 knot = 1.852 km/h.
How do I convert km/h to m/s quickly?
Divide by 3.6. So 90 km/h ÷ 3.6 = 25 m/s. Multiply m/s by 3.6 to go back.
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