Conversion tool

CM to inches converter

To convert centimeters to inches, divide by 2.54. One centimeter equals about 0.3937 inches, so 10 cm is roughly 3.94 inches. Enter a value below for an exact result.

Live conversion

The formula

inches = centimeters ÷ 2.54

The inch is defined as exactly 2.54 cm, so this conversion is exact. To go the other way, multiply inches by 2.54.

CM to inches chart

Centimeters Inches (exact) Inches (rounded)
1 cm 0.3937 in 0.39 in
2 cm 0.7874 in 0.79 in
3 cm 1.1811 in 1.18 in
5 cm 1.9685 in 1.97 in
10 cm 3.9370 in 3.94 in
15 cm 5.9055 in 5.91 in
20 cm 7.8740 in 7.87 in
25 cm 9.8425 in 9.84 in
30 cm 11.8110 in 11.81 in
50 cm 19.6850 in 19.69 in
100 cm 39.3701 in 39.37 in

CM to inches FAQ

How do you convert cm to inches? +

Divide the centimeter value by 2.54, because one inch equals exactly 2.54 centimeters. For example, 10 cm ÷ 2.54 = 3.94 inches.

How many inches is 1 cm? +

One centimeter equals about 0.3937 inches, which is just under four tenths of an inch.

How many inches is 10 cm? +

10 cm equals about 3.94 inches, a little under 4 inches.

Is 2.54 cm exactly 1 inch? +

Yes. The inch is defined as exactly 2.54 centimeters, so the conversion is exact rather than an approximation.

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