CM to Inches Converter
Type in either box: centimeters convert to inches and inches back to centimeters, with the result in feet and inches and the nearest 1/16 inch.
The formula
An inch is defined as exactly 2.54 centimeters, so divide centimeters by 2.54 to get inches, or multiply inches by 2.54 to get centimeters.
30 cm = 11.811 in
CM to inches conversion table
| Centimeters (cm) | Inches |
|---|---|
| 1 | 0.3937 |
| 2 | 0.7874 |
| 3 | 1.181 |
| 5 | 1.969 |
| 10 | 3.937 |
| 15 | 5.906 |
| 20 | 7.874 |
| 25 | 9.843 |
| 30 | 11.811 |
| 40 | 15.748 |
| 50 | 19.685 |
| 60 | 23.622 |
| 70 | 27.559 |
| 80 | 31.496 |
| 90 | 35.433 |
| 100 | 39.37 |
| 120 | 47.244 |
| 150 | 59.055 |
| 180 | 70.866 |
| 200 | 78.74 |
Inches to cm conversion table
| Inches | Centimeters (cm) |
|---|---|
| 1 | 2.54 |
| 2 | 5.08 |
| 3 | 7.62 |
| 4 | 10.16 |
| 5 | 12.7 |
| 6 | 15.24 |
| 7 | 17.78 |
| 8 | 20.32 |
| 9 | 22.86 |
| 10 | 25.4 |
| 11 | 27.94 |
| 12 | 30.48 |
| 15 | 38.1 |
| 20 | 50.8 |
| 24 | 60.96 |
| 27 | 68.58 |
| 32 | 81.28 |
| 43 | 109.22 |
| 50 | 127 |
| 55 | 139.7 |
| 65 | 165.1 |
| 75 | 190.5 |
Good to know
Screen sizes (TVs, monitors, phones) are measured in inches along the diagonal, so a 55-inch TV is about 139.7 cm corner to corner, not across.
Clothing sizes such as jeans (W32 L30) are in inches too: a 32-inch waist is 81.3 cm.
Sources
Frequently asked questions
How many inches is 1 cm?
1 cm is about 0.3937 inches. Put the other way, 1 inch is exactly 2.54 cm, so 10 cm is 3.94 inches and 30 cm is 11.81 inches.
How do I convert inches to centimeters?
Multiply by 2.54. A 15-inch laptop screen is 15 × 2.54 = 38.1 cm across the diagonal.
How many cm is a foot?
One foot is 12 inches, or exactly 30.48 cm. A 6-foot person is 182.88 cm tall.