DIY Calculators

Centimetres to inches

Convert centimetres to inches. To convert centimetres to inches, divide by 2.54.

Factors from their legal definitions.

Convert the other way: inches to cm.

30 centimetres is 11.811 inches.

One centimetre0.3937 in
One inch2.54 cm

Show the workings
StepSumAnswer
One centimetre in metresa hundredth of a metre0.01 m
One inch in metres0.9144 m ÷ 360.025 m
30 centimetres in metres30 × 0.010.3 m
In inches0.3 ÷ 0.025411.811 in

Where the figures come from

Centimetres to inches table

CentimetresInches
0.5 cm0.1969 in
1 cm0.3937 in
2 cm0.7874 in
3 cm1.181 in
4 cm1.575 in
5 cm1.969 in
6 cm2.362 in
7 cm2.756 in
8 cm3.15 in
9 cm3.543 in
10 cm3.937 in
12 cm4.724 in
15 cm5.906 in
20 cm7.874 in
25 cm9.843 in
30 cm11.811 in
40 cm15.748 in
50 cm19.685 in
75 cm29.528 in
100 cm39.37 in

How to convert centimetres to inches

One centimetre is 0.3937 inches, and one inch is 2.54 centimetres. So to turn centimetres into inches, divide by 2.54. For example, 30 centimetres ÷ 2.54 = 11.811 inches.

Where the numbers come from

Imperial units are defined in law as exact amounts of metric ones. These are the definitions this converter uses:

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