Speed Converter

Convert between mph, km/h, m/s, and knots. Enter value and unit.

Speed Converter

Value

From unit

To unit

Result

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How it works

1 mph = 1.609344 km/h; 1 knot = 1.852 km/h. We convert via a base unit.

When to use it

Use for driving, aviation, or physics.

Frequently asked questions

What is a knot?

Nautical mile per hour; 1 knot = 1.852 km/h.