Speed

Miles Per Hour to kilometers per hour

1 mile per hour = 1.6093 kilometers per hour.

1 mile per hour = 1.6093 kilometers per hour. Multiply by 1.6093.

1.6093 kilometers per hour

Common amounts

mphkm/h
1 mph1.6093 km/h
10 mph16.0934 km/h
50 mph80.4672 km/h
60 mph96.5606 km/h
100 mph160.93 km/h

How it works

How to convert miles per hour to kilometers per hour

km/h = mph × 1.6093.

Worked examples: 10 miles per hour = 16.093 kilometers per hour; 100 miles per hour = 160.93 kilometers per hour.

About miles per hour and kilometers per hour

Miles per hour is used on road signs in the US and the UK. Kilometers per hour is the speed unit on road signs in most of the world.

When you'd convert miles per hour to kilometers per hour

US and UK speed limits in metric: 70 mph is about 113 km/h.

Common mistake: rounding the factor to 1.6 or 0.6 too early; at motorway speeds that is off by a few km/h.

To go the other way, use the kilometers per hour to miles per hour converter.

The converter on this page works out the answer in your browser as you type, and shows the factor so you can check it by hand.

Questions

How do I convert miles per hour to kilometers per hour?

1 mile per hour = 1.6093 kilometers per hour. Multiply by 1.6093.

What does the Converter : Units app add?

The same conversion, plus history, a constants library, and the rest of the unit categories on the phone.