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Unit Converter

Conversion formula

The conversion factor from centimeters to millimeters is 10, which means that 1 centimeter is equal to 10 millimeters:

1 cm = 10 mm

To convert 2.5 centimeters into millimeters we have to multiply 2.5 by the conversion factor in order to get the length amount from centimeters to millimeters. We can also form a simple proportion to calculate the result:

1 cm → 10 mm

2.5 cm → L(mm)

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

L(mm) = 2.5 cm × 10 mm

L(mm) = 25 mm

The final result is:

2.5 cm → 25 mm

We conclude that 2.5 centimeters is equivalent to 25 millimeters:

2.5 centimeters = 25 millimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 0.04 × 2.5 centimeters.

Another way is saying that 2.5 centimeters is equal to 1 ÷ 0.04 millimeters.

Approximate result

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

2.5 cm ≅ 25 mm

An alternative is also that one millimeter is approximately zero point zero four times two point five centimeters.

Conversion table

centimeters to millimeters chart

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

centimeters (cm) millimeters (mm)
3.5 centimeters 35 millimeters
4.5 centimeters 45 millimeters
5.5 centimeters 55 millimeters
6.5 centimeters 65 millimeters
7.5 centimeters 75 millimeters
8.5 centimeters 85 millimeters
9.5 centimeters 95 millimeters
10.5 centimeters 105 millimeters
11.5 centimeters 115 millimeters
12.5 centimeters 125 millimeters