ManyConvert cm to inches
1 centimeter = 0.3937008 inches. Type a value below for an instant cm to inches conversion, or use the table for common values.
| Centimeters | Inches |
|---|---|
| 1 cm | 0.3937008 in |
| 2 cm | 0.7874016 in |
| 3 cm | 1.181102 in |
| 4 cm | 1.574803 in |
| 5 cm | 1.968504 in |
| 10 cm | 3.937008 in |
| 15 cm | 5.905512 in |
| 20 cm | 7.874016 in |
| 25 cm | 9.84252 in |
| 30 cm | 11.81102 in |
| 40 cm | 15.74803 in |
| 50 cm | 19.68504 in |
| 75 cm | 29.52756 in |
| 100 cm | 39.37008 in |
How centimetres convert to inches
An inch is defined as exactly 2.54 centimetres, so you divide: inches = cm ÷ 2.54. Multiplying by 0.3937 gives the same answer.
In your head: multiply by 4 and divide by 10. For 50 cm that gives 20 inches, against a true 19.69 — close enough for judging whether something fits.
Feet and inches from centimetres
Heights and room sizes are usually wanted in feet and inches rather than inches alone. Convert to inches, then divide by 12: the whole number is the feet and the remainder is the inches. A height of 170 cm is 66.93 inches, which is 5 feet with 6.93 inches left over — 5 ft 7 in to the nearest inch.
Sizes you are likely to look up
| Object | Centimetres | Inches |
|---|---|---|
| A4 paper | 21 × 29.7 | 8.27 × 11.69 |
| Passport photo (India, US visa) | 5.1 × 5.1 | 2 × 2 |
| Ruler | 30 | 11.81 |
| Cabin bag limit (many airlines) | 55 × 40 × 20 | 21.7 × 15.7 × 7.9 |
| Standard door height | 203 | 79.9 |
Where it matters
Clothing is the usual reason: waist, chest and inseam sizes on international sites are in inches, and a tape measure in centimetres needs converting. Jeans marked 32 have an 81 cm waist. Round to the nearest half inch — a tape measure and a body are not more exact than that. Screen sizes are a second: televisions and monitors are sold by the diagonal in inches everywhere.
Convert cm to inches quickly and accurately with this free tool. 1 centimeter = 0.3937008 inches. Need the other direction? Inches to Centimeters. For every other unit, use the full ManyHand Unit Converter.
How do I convert cm to inches?
Multiply the number of centimeters by 0.3937008. For example, 10 cm = 3.937008 in. You can also type any value in the converter above.
What is 1 centimeter in inches?
1 centimeter equals 0.3937008 inches. Conversely, 1 inch equals 2.54 centimeters.
Is this cm to inches converter free?
Yes. It's free with no sign-up, works on phone and desktop, and runs entirely in your browser.