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 900 millimeters into kilometers we have to multiply 900 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

900 mm → L_(km)

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

L_(km) = 900 mm × 1.0E-6 km

L_(km) = 0.0009 km

The final result is:

900 mm → 0.0009 km

We conclude that 900 millimeters is equivalent to 0.0009 kilometers:

900 millimeters = 0.0009 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 1111.1111111111 × 900 millimeters.

Another way is saying that 900 millimeters is equal to 1 ÷ 1111.1111111111 kilometers.

Approximate result

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

900 mm ≅ 0.001 km

An alternative is also that one kilometer is approximately one thousand one hundred eleven point one one one times nine hundred 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