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 1240 millimeters into kilometers we have to multiply 1240 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

1240 mm → L_(km)

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

L_(km) = 1240 mm × 1.0E-6 km

L_(km) = 0.00124 km

The final result is:

1240 mm → 0.00124 km

We conclude that 1240 millimeters is equivalent to 0.00124 kilometers:

1240 millimeters = 0.00124 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 806.45161290323 × 1240 millimeters.

Another way is saying that 1240 millimeters is equal to 1 ÷ 806.45161290323 kilometers.

Approximate result

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

1240 mm ≅ 0.001 km

An alternative is also that one kilometer is approximately eight hundred six point four five two times one thousand two hundred forty 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