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 15 millimeters into centimeters we have to multiply 15 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

15 mm → L_(cm)

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

L_(cm) = 15 mm × 0.1 cm

L_(cm) = 1.5 cm

The final result is:

15 mm → 1.5 cm

We conclude that 15 millimeters is equivalent to 1.5 centimeters:

15 millimeters = 1.5 centimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 centimeter is equal to 0.66666666666667 × 15 millimeters.

Another way is saying that 15 millimeters is equal to 1 ÷ 0.66666666666667 centimeters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that fifteen millimeters is approximately one point five centimeters:

15 mm ≅ 1.5 cm

An alternative is also that one centimeter is approximately zero point six six seven times fifteen 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