42 millimeters in centimeters

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 42 millimeters into centimeters we have to multiply 42 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

42 mm → L_(cm)

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

L_(cm) = 42 mm × 0.1 cm

L_(cm) = 4.2 cm

The final result is:

42 mm → 4.2 cm

We conclude that 42 millimeters is equivalent to 4.2 centimeters:

42 millimeters = 4.2 centimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 centimeter is equal to 0.23809523809524 × 42 millimeters.

Another way is saying that 42 millimeters is equal to 1 ÷ 0.23809523809524 centimeters.

Approximate result

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

42 mm ≅ 4.2 cm

An alternative is also that one centimeter is approximately zero point two three eight times forty-two millimeters.

Millimeters to centimeters conversion table

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