## Conversion formula

The conversion factor from kilometers to miles is 0.62137119223733, which means that 1 kilometer is equal to 0.62137119223733 miles:

1 km = 0.62137119223733 mi

To convert 21.5 kilometers into miles we have to multiply 21.5 by the conversion factor in order to get the length amount from kilometers to miles. We can also form a simple proportion to calculate the result:

1 km → 0.62137119223733 mi

21.5 km → L(mi)

Solve the above proportion to obtain the length L in miles:

L(mi) = 21.5 km × 0.62137119223733 mi

L(mi) = 13.359480633103 mi

The final result is:

21.5 km → 13.359480633103 mi

We conclude that 21.5 kilometers is equivalent to 13.359480633103 miles:

21.5 kilometers = 13.359480633103 miles

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 mile is equal to 0.074853209302326 × 21.5 kilometers.

Another way is saying that 21.5 kilometers is equal to 1 ÷ 0.074853209302326 miles.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that twenty-one point five kilometers is approximately thirteen point three five nine miles:

21.5 km ≅ 13.359 mi

An alternative is also that one mile is approximately zero point zero seven five times twenty-one point five kilometers.

## Conversion table

### kilometers to miles chart

For quick reference purposes, below is the conversion table you can use to convert from kilometers to miles

kilometers (km) miles (mi)
22.5 kilometers 13.981 miles
23.5 kilometers 14.602 miles
24.5 kilometers 15.224 miles
25.5 kilometers 15.845 miles
26.5 kilometers 16.466 miles
27.5 kilometers 17.088 miles
28.5 kilometers 17.709 miles
29.5 kilometers 18.33 miles
30.5 kilometers 18.952 miles
31.5 kilometers 19.573 miles