## Conversion formula

The conversion factor from kilometers to millimeters is 1000000, which means that 1 kilometer is equal to 1000000 millimeters:

1 km = 1000000 mm

To convert 50 kilometers into millimeters we have to multiply 50 by the conversion factor in order to get the length amount from kilometers to millimeters. We can also form a simple proportion to calculate the result:

1 km → 1000000 mm

50 km → L(mm)

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

L(mm) = 50 km × 1000000 mm

L(mm) = 50000000 mm

The final result is:

50 km → 50000000 mm

We conclude that 50 kilometers is equivalent to 50000000 millimeters:

50 kilometers = 50000000 millimeters

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 2.0E-8 × 50 kilometers.

Another way is saying that 50 kilometers is equal to 1 ÷ 2.0E-8 millimeters.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that fifty kilometers is approximately fifty million millimeters:

50 km ≅ 50000000 mm

An alternative is also that one millimeter is approximately zero times fifty kilometers.

## Conversion table

### kilometers to millimeters chart

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

kilometers (km) millimeters (mm)
51 kilometers 51000000 millimeters
52 kilometers 52000000 millimeters
53 kilometers 53000000 millimeters
54 kilometers 54000000 millimeters
55 kilometers 55000000 millimeters
56 kilometers 56000000 millimeters
57 kilometers 57000000 millimeters
58 kilometers 58000000 millimeters
59 kilometers 59000000 millimeters
60 kilometers 60000000 millimeters