Length conversion
Centimetres to Inches (cm to in)
1 cm = 0.3937 in — multiply the number of centimetres by 0.3937.
Centimetres to Inches conversion chart
| centimetres | inches |
|---|---|
| 1 cm | 0.3937 in |
| 2 cm | 0.7874 in |
| 3 cm | 1.1811 in |
| 4 cm | 1.5748 in |
| 5 cm | 1.9685 in |
| 6 cm | 2.3622 in |
| 7 cm | 2.7559 in |
| 8 cm | 3.1496 in |
| 9 cm | 3.5433 in |
| 10 cm | 3.937 in |
| 12 cm | 4.7244 in |
| 15 cm | 5.9055 in |
| 18 cm | 7.0866 in |
| 20 cm | 7.874 in |
| 25 cm | 9.8425 in |
| 30 cm | 11.811 in |
| 40 cm | 15.748 in |
| 50 cm | 19.685 in |
| 60 cm | 23.622 in |
| 75 cm | 29.5276 in |
| 100 cm | 39.3701 in |
How to convert by hand
1 cm = 0.393700787 in
Because this is a linear conversion, the ratio never changes: every centimetre is always 0.3937 in, whatever the size of the number.
Worked example: 10 cm × 0.3937 = 3.937 in .
Related conversions
About centimetres and inches
Length conversions come up constantly when a product is specified in one system and you think in the other — screen sizes in inches, running distances in kilometres, height in feet.
Centimetre
Metric (SI)One hundredth of a metre.
Commonly used for: Body measurements, paper sizes and everyday lengths almost everywhere outside the United States.
Inch
US / ImperialDefined as exactly 2.54 centimetres since the 1959 international yard agreement.
Commonly used for: Screen sizes, tyre diameters and US construction.
Questions
How many inches are in one centimetre?
One centimetre equals 0.3937 in. To convert any amount, multiply the number of centimetres by 0.3937.
What is 5 cm in in?
5 cm = 1.9685 in. Type any value into the converter above to get an exact answer.
How do I convert inches back to centimetres?
Divide by 0.3937 instead of multiplying — or use our Inches to Centimetres converter.
Is this converter accurate?
Yes. Linear conversions use the internationally agreed factors published by NIST (SP 811), and temperature conversions use the exact defining formulas. Calculations run at full double precision and are only rounded for display.
Need a different unit?
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