Miles per Hour to Kilometers per Hour converter

Convert miles per hour (mph) to kilometers per hour (km/h) — results update instantly as you type.

Miles per Hour to Kilometers per Hour

To1.6093

1 mph = 1.609344 km/h

How to convert Miles per Hour to Kilometers per Hour

Speed units depend on context: road signs use km/h or mph, physics uses meters per second, and ships and aircraft use knots. Converting between them is essential for travel, sport, and science.

Everything converts through meters per second. One km/h is exactly 1/3.6 m/s, one mph is exactly 0.44704 m/s, and one knot is one nautical mile per hour — about 0.5144 m/s.

Formula

mph × 1.609344 = km/h

Multiply your miles per hour value by 1.609344 to get kilometers per hour. For the reverse, divide by the same factor.

Miles per Hour to Kilometers per Hour conversion table

Miles per HourKilometers per Hour
1 mph1.609344 km/h
2 mph3.218688 km/h
5 mph8.04672 km/h
10 mph16.09344 km/h
25 mph40.2336 km/h
100 mph160.9344 km/h

Common use cases

  • Understanding foreign speed limits while driving abroad
  • Wind speed readings between knots and km/h
  • Running and cycling pace comparisons
  • Physics problems requiring SI units

Frequently asked questions

Multiply mph by 1.609344. For a quick estimate, multiply by 1.6 — so 60 mph is about 96 km/h (exactly 96.56).