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 4200 millimeters into centimeters we have to multiply 4200 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

4200 mm → L_(cm)

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

L_(cm) = 4200 mm × 0.1 cm

L_(cm) = 420 cm

The final result is:

4200 mm → 420 cm

We conclude that 4200 millimeters is equivalent to 420 centimeters:

4200 millimeters = 420 centimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 centimeter is equal to 0.0023809523809524 × 4200 millimeters.

Another way is saying that 4200 millimeters is equal to 1 ÷ 0.0023809523809524 centimeters.

Approximate result

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

4200 mm ≅ 420 cm

An alternative is also that one centimeter is approximately zero point zero zero two times four thousand two hundred 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