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 1003 millimeters into kilometers we have to multiply 1003 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

1003 mm → L_(km)

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

L_(km) = 1003 mm × 1.0E-6 km

L_(km) = 0.001003 km

The final result is:

1003 mm → 0.001003 km

We conclude that 1003 millimeters is equivalent to 0.001003 kilometers:

1003 millimeters = 0.001003 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 997.00897308076 × 1003 millimeters.

Another way is saying that 1003 millimeters is equal to 1 ÷ 997.00897308076 kilometers.

Approximate result

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

1003 mm ≅ 0.001 km

An alternative is also that one kilometer is approximately nine hundred ninety-seven point zero zero nine times one thousand three 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