Conversion formula

The conversion factor from millimeters to kilometers is 1.0E-6, which means that 1 millimeter is equal to 1.0E-6 kilometers:

1 mm = 1.0E-6 km

To convert 4220 millimeters into kilometers we have to multiply 4220 by the conversion factor in order to get the length amount from millimeters to kilometers. We can also form a simple proportion to calculate the result:

1 mm → 1.0E-6 km

4220 mm → L_(km)

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

L_(km) = 4220 mm × 1.0E-6 km

L_(km) = 0.00422 km

The final result is:

4220 mm → 0.00422 km

We conclude that 4220 millimeters is equivalent to 0.00422 kilometers:

4220 millimeters = 0.00422 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 236.96682464455 × 4220 millimeters.

Another way is saying that 4220 millimeters is equal to 1 ÷ 236.96682464455 kilometers.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four thousand two hundred twenty millimeters is approximately zero point zero zero four kilometers:

4220 mm ≅ 0.004 km

An alternative is also that one kilometer is approximately two hundred thirty-six point nine six seven times four thousand two hundred twenty millimeters.

Conversion table

millimeters to kilometers chart

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