Conversion formula

The conversion factor from millimeters to centimeters is 0.1, which means that 1 millimeter is equal to 0.1 centimeters:

1 mm = 0.1 cm

To convert 8420 millimeters into centimeters we have to multiply 8420 by the conversion factor in order to get the length amount from millimeters to centimeters. We can also form a simple proportion to calculate the result:

1 mm → 0.1 cm

8420 mm → L_(cm)

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

L_(cm) = 8420 mm × 0.1 cm

L_(cm) = 842 cm

The final result is:

8420 mm → 842 cm

We conclude that 8420 millimeters is equivalent to 842 centimeters:

8420 millimeters = 842 centimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 centimeter is equal to 0.001187648456057 × 8420 millimeters.

Another way is saying that 8420 millimeters is equal to 1 ÷ 0.001187648456057 centimeters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that eight thousand four hundred twenty millimeters is approximately eight hundred forty-two centimeters:

8420 mm ≅ 842 cm

An alternative is also that one centimeter is approximately zero point zero zero one times eight thousand four hundred twenty millimeters.

Conversion table

millimeters to centimeters chart

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