How To Convert Miles to Kilometers - Example Problem

Worked Length Unit Conversion Example Problem

Speedometer
Carlos Gotay / Getty Images

The method to convert miles to kilometers is demonstrated in this worked example problem. Miles (mi) are a unit of distance used in the United States, particularly for travel. The rest of the world uses kilometers (km).

Miles To Kilometers Problem

The distance between New York City, New York and Los Angeles, California is 2445 miles. What is this distance in kilometers?
 

Solution

Start out with the conversion factor between miles and kilometers:

1 mile = 1.609 km


Set up the conversion so the desired unit will be canceled out. In this case, we want kilometers to be the remaining unit.

distance in km = (distance in mi) x (1.609 km/1 mi)
distance in km = (2445) x (1.609 km/1 mi)
distance in km = 3934 km
 

Answer

The distance between New York City, New York and Los Angeles, California is 3934 kilometers.

Check Your Answer

When you convert from miles to kilometers, your answer in kilometers will be about one and a half times larger than the original value in miles. You don't need a calculator to see whether or not your answer makes sense. Just make sure it's a larger value, but not so big that it's twice the original number,

When you work the conversion the other way, from kilometers to miles, the answer in miles is a bit more than half the original value.