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 490 millimeters into kilometers we have to multiply 490 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

490 mm → L_(km)

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

L_(km) = 490 mm × 1.0E-6 km

L_(km) = 0.00049 km

The final result is:

490 mm → 0.00049 km

We conclude that 490 millimeters is equivalent to 0.00049 kilometers:

490 millimeters = 0.00049 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 2040.8163265306 × 490 millimeters.

Another way is saying that 490 millimeters is equal to 1 ÷ 2040.8163265306 kilometers.

Approximate result

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

490 mm ≅ 0 km

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