Centimetres to inches converter
Type a length in centimetres and see at once how many inches that is. With the option above the field, the tool also converts from inches to centimetres. Handy for screen sizes, clothing, tyres and orders from abroad.
In centimetres or in inches. 1 inch is exactly 2.54 cm.
Fill in the fields; the answer appears here straight away.
How it's worked out
How it works
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Enter the values
Type the numbers or the formula. Decimals may use a point or a comma. No idea? Click Fill in an example.
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Instant answer
The answer appears as you type, with the most important intermediate values.
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See the working
Under "How it's worked out" you see the steps, handy for checking your own calculation.
The formula
One inch is exactly 2.54 centimetres. So:
- cm to inches: divide by 2.54
- inches to cm: multiply by 2.54
180 cm is 180 ÷ 2.54 = 70.87 inches. A 55-inch television measures 55 × 2.54 = 139.7 cm across the diagonal.
Conversion table
| cm | in | |---|---| | 1 cm | 0.39 in | | 2.5 cm | 0.98 in | | 5 cm | 1.97 in | | 10 cm | 3.94 in | | 15 cm | 5.91 in | | 20 cm | 7.87 in | | 30 cm | 11.81 in | | 50 cm | 19.69 in | | 100 cm | 39.37 in | | 180 cm | 70.87 in |
A rule of thumb
2.5 cm is about 1 inch. Twelve inches (1 foot) is 30.48 cm.
Frequently asked questions
Is the centimetres to inches free?
Yes. The centimetres to inches is completely free, with no account, sign-up or usage limit.
How accurate is the result?
The tool calculates with your browser's number precision. For important calculations, always double-check what you entered.
Does it work on my phone?
Yes. The tool works in any modern browser on a phone, tablet or computer.