Centimeters to inches: in short
Divide the centimeters by 2.54 to get inches. 10 cm is 3.94 in, about 3⅞″ on a tape measure, and 1 meter is 39.37 in.
The formula
Inches = centimeters ÷ 2.54. The number is exact: an inch is 2.54 cm by definition. The way back is centimeters = inches × 2.54.
A US tape measure shows inches in eighths. The converter gives both the decimal inches and the nearest eighth, so you can mark it on a board.
Common sizes
| Centimeters | Inches | To 1/8 inch |
|---|---|---|
| 1 cm | 0.39 in | ⅜″ |
| 2 cm | 0.79 in | ¾″ |
| 2.5 cm | 0.98 in | 1″ |
| 3 cm | 1.18 in | 1⅛″ |
| 5 cm | 1.97 in | 2″ |
| 10 cm | 3.94 in | 3⅞″ |
| 15 cm | 5.91 in | 5⅞″ |
| 20 cm | 7.87 in | 7⅞″ |
| 25 cm | 9.84 in | 9⅞″ |
| 30 cm | 11.81 in | 11¾″ |
| 40 cm | 15.75 in | 15¾″ |
| 50 cm | 19.69 in | 19⅝″ |
| 60 cm | 23.62 in | 23⅝″ |
| 75 cm | 29.53 in | 29½″ |
| 100 cm | 39.37 in | 39⅜″ |
Inches to centimeters
| Inches | Centimeters |
|---|---|
| ⅛″ | 0.32 cm |
| ¼″ | 0.64 cm |
| ⅜″ | 0.95 cm |
| ½″ | 1.27 cm |
| 1″ | 2.54 cm |
| 2″ | 5.08 cm |
| 3″ | 7.62 cm |
| 4″ | 10.16 cm |
| 6″ | 15.24 cm |
| 8″ | 20.32 cm |
| 10″ | 25.4 cm |
| 12″ | 30.48 cm |
| 24″ | 60.96 cm |
| 32″ | 81.28 cm |
| 55″ | 139.7 cm |
| 65″ | 165.1 cm |
Longer than a foot
From 12 inches on, feet and inches read easier: 50 cm is 1′ 7⅝″. For heights and room sizes, use the converter for centimeters to feet and inches.
Figure 1. One floor of 25 × 17 ft. The rooms add up to 425 sq ft.
About this page · Written by the Squaremetry team. Last checked on October 1, 2026. Found a mistake? Send us a message.