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 4.2 kilometers into miles we have to multiply 4.2 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

4.2 km → L_(mi)

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

L_(mi) = 4.2 km × 0.62137119223733 mi

L_(mi) = 2.6097590073968 mi

The final result is:

4.2 km → 2.6097590073968 mi

We conclude that 4.2 kilometers is equivalent to 2.6097590073968 miles:

4.2 kilometers = 2.6097590073968 miles

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 mile is equal to 0.38317714285714 × 4.2 kilometers.

Another way is saying that 4.2 kilometers is equal to 1 ÷ 0.38317714285714 miles.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four point two kilometers is approximately two point six one miles:

4.2 km ≅ 2.61 mi

An alternative is also that one mile is approximately zero point three eight three times four point two 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