Distance in Miles and Kilometers

To convert kilometers to miles per hour remember that 1 Mile is equal to 1.609344 Kilometers. Armed with this knowledge, you can multiply by 1.6 and get the answer but we find this to be much easier.

Throw the pencil and paper out the window, simply divide the Kilometers in half and add the first digit back to the answer and voilà, you have just arrived at the miles per hour.
Let's see that in action;

90 KPH ÷ 2 = 45
45 + 9 = 54 MPH

Now try this, convert 100 KPH to MPH

100 KPH ÷ 2 = 50
50 + 10 = 60 MPH

One more time, convert 45 KPH to MPH
This one is a bit different as you would actually add 4.5 to get the equivalent to multiplying by .6 but for driving purposes just round the numbers and call it good, your only 1 mph off and that difference is negligible.

45 KPH ÷ 2 = 22
22 + 4 = 26 MPH

Reference for accuracy; Some folks prefer the multiplication method, not me.
45 KPH × .6 = 27 MPH

To see the miles between points use the free mileage calculator below.

Choose to convert Miles to Kilometers or Kilometers to Miles