Centimeters to Inches Converter
Instant cm to in conversion. Enter a number and get the answer right away.
How to Convert cm to in
1 cm equals 0.393701 in. To convert cm to in, multiply by 0.393701 (in = cm / 2.54). For example, 10 cm is 3.937 in. The calculator above applies the same conversion in both directions, so you can also type a value in in to get cm.
in = cm / 2.54
One cm equals 0.393701 in. Use the formula below for any number.
cm to in Conversion Table
| cm | in |
|---|---|
| 1 cm | 0.393701 in |
| 2 cm | 0.787402 in |
| 3 cm | 1.181102 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 |
| 50 cm | 19.685039 in |
| 75 cm | 29.527559 in |
| 100 cm | 39.370079 in |
| 150 cm | 59.055118 in |
| 200 cm | 78.740157 in |
| 500 cm | 196.850394 in |
| 1000 cm | 393.700787 in |
Common cm to in Conversions
When You Need This Conversion
Useful for road signs, running distances, travel planning, and reading height and room measurements.
Units and Conventions
This page uses the international mile: 1 statute mile = 1,609.344 m exactly. A nautical mile is 1,852 m, and 1 inch is exactly 2.54 cm. US survey feet and survey miles differ slightly from international feet and miles.
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Frequently Asked Questions
How many in are in 1 cm?
1 cm equals 0.393701 in. The formula is in = cm / 2.54.
What is the cm to in formula?
Use in = cm / 2.54. The calculator above applies it instantly and also works in reverse.
Can I convert in back to cm?
Yes. Type a value into the second field and the calculator converts in the opposite direction.
Is this converter free and accurate?
Yes. It runs in your browser with no signup. Results come from the exact conversion factor shown on this page and are rounded to 6 decimal places.
Which standard does this page use?
See the Units and Conventions section above - it lists the exact definition used here and the alternatives common in other countries.
Does it work on my phone?
Yes. The calculator is designed for phones first, with large inputs and instant results as you type.