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Speed Converter
Convert speed between mph, km/h, m/s, ft/s, and knots. Instant speed unit conversion for driving, aviation, and physics.
1 kmPerHour
0.62137119 milePerHour
1 kmPerHour × 0.2777777777777778 ÷ 0.44704 = 0.6213711922373341 milePerHour
mph0.621371
m/s0.277778
Knot0.539957
How to Use the Speed Converter
Enter your values above for an instant result. This tool uses verified formulas and is optimised for users in USA, Canada, UK, Australia. All calculations happen in your browser — your data is never sent to our servers.
Frequently Asked Questions
How do you convert mph to km/h?
Multiply mph by 1.60934. So 60 mph = 96.56 km/h. A speed limit of 100 km/h ≈ 62.1 mph.