Centimeters to Inches Converter (cm to in)
1 cm = 0.393701 in
Centimeter to Inch conversion table
| cm | in |
|---|---|
| 1 | 0.393701 |
| 2 | 0.787402 |
| 5 | 1.9685 |
| 10 | 3.937 |
| 20 | 7.874 |
| 50 | 19.685 |
| 100 | 39.3701 |
| 200 | 78.7402 |
| 500 | 196.85 |
| 1,000 | 393.7 |
About the Cm to Inches
This converter maps centimeters to inches and back — the conversion you need for screen sizes, waist measurements, furniture dimensions, ring sizes and height, whenever metric labeling meets imperial expectations.
One inch is exactly 2.54 centimeters, so dividing by 2.54 is all the math there is. Enter a value in either field and the other updates immediately; the dropdowns also reach millimeters, meters, feet and miles for anything else you measure.
How to use the Cm to Inches
- Type a value into the centimeters field.
- The inch value appears instantly — and vice versa if you type in the inches field.
- Scan the table below for common values such as screen and paper sizes.
How to convert cm to inches
1 inch = 2.54 cm (exact, by international definition since 1959) inches = centimeters ÷ 2.54 centimeters = inches × 2.54
Frequently asked questions
How many inches is 30 cm?
30 cm ÷ 2.54 = 11.81 inches — slightly under a foot, which is why a 30 cm ruler is close to a 12-inch ruler.
How tall is 180 cm in feet and inches?
180 cm is 70.87 inches, i.e. 5 feet 10.9 inches — call it 5′11″. The foot unit in the dropdown gives 5.906 ft.
Is 2.54 cm per inch exact?
Yes. The inch was redefined in 1959 as exactly 25.4 millimeters, so the conversion factor is a definition, not a measurement.
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