Speed Converter
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Speed Converter Guide
Convert speed between metric, imperial, and nautical units. Enter a value, pick the units, and the result appears instantly with the exact rate shown both ways.
1 mph = 1.60934 km/h · 1 m/s = 3.6 km/h · 1 knot = 1.852 km/h · 1 km/h = 0.621 mph.
How Do I Convert mph to km/h?
Multiply the speed in miles per hour by 1.60934. For example, 60 mph × 1.60934 = 96.56 km/h — a common highway speed.
Quick Reference Table
| mph | km/h |
|---|---|
| 30 | 48.3 |
| 60 | 96.6 |
| 70 | 112.7 |
| 100 | 160.9 |
Related: Length Converter, Gas Mileage Calculator, and Time Converter.
Frequently Asked Questions
How do I convert mph to km/h?
Multiply the mph value by 1.60934.
How do I convert km/h to mph?
Divide by 1.60934, or multiply by 0.621371.
How do I convert m/s to km/h?
Multiply meters per second by 3.6.
What is a knot?
One nautical mile per hour, about 1.852 km/h.
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