Mile per hour to Kilometer per hour

About this conversion

To convert Mile per hour to Kilometer per hour, multiply the number of Mile per hour by 1.609344.

Speed is quoted in kilometers per hour, miles per hour, meters per second or knots depending on the country and whether you are driving, running, sailing or doing physics.

Conversion table

How to use this converter

1. 1
   Enter your Mile per hour value

   Type any number into the Mile per hour field. It starts at 1 so you can read the rate straight away.

2. 2
   Read the Kilometer per hour result

   The amount in Kilometer per hour updates as you type, so there is no button to press and nothing to wait for.

3. 3
   Swap or keep exploring

   Use the swap control to flip the direction, or pick a related conversion from the list below.

Frequently asked

How many Kilometer per hour are in one Mile per hour?

One Mile per hour equals 1.609344 km/h. Enter any amount above to get an exact figure for your own value.

Is this converter accurate?

Yes. It uses the exact international definition of each unit and computes on your device, so the only rounding is for display.

Do you upload the numbers I enter?

No. The Mile per hour to Kilometer per hour conversion runs entirely in your browser tab, and nothing you type is sent to a server.

Does it work on my phone?

Yes. It runs in any modern mobile browser and keeps working offline once the page has loaded.