Inches to cm Converter
Conversion formula
1 in = 2.54 cm
Inches show up in US product listings, waist and inseam sizes, construction drawings and TV or monitor sizes, which are measured diagonally across the screen. Converting to centimeters makes those sizes comparable with metric specifications used in most of the world.
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in
centimeters
50.8 cm
Full calculators:Length Converter
How to convert inches to centimeters
- 1
1 inch = 2.54 centimeters, so multiply by 2.54.
- 2
Example: 20 × 2.54 = 50.8 cm.
Inches to cm conversion chart
| Inches | cm |
|---|---|
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 3 in | 7.62 cm |
| 4 in | 10.16 cm |
| 5 in | 12.7 cm |
| 6 in | 15.24 cm |
| 8 in | 20.32 cm |
| 10 in | 25.4 cm |
| 12 in | 30.48 cm |
| 15 in | 38.1 cm |
| 18 in | 45.72 cm |
| 20 in | 50.8 cm |
| 24 in | 60.96 cm |
| 30 in | 76.2 cm |
| 32 in | 81.28 cm |
| 36 in | 91.44 cm |
| 40 in | 101.6 cm |
| 43 in | 109.22 cm |
| 50 in | 127 cm |
| 55 in | 139.7 cm |
| 65 in | 165.1 cm |
| 75 in | 190.5 cm |
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Frequently asked questions
How do I convert inches to centimeters?
1 inch = 2.54 centimeters, so multiply by 2.54. For example, 20 in = 50.8 cm.
How many centimeters are in one inch?
One inch equals 2.54 centimeters.
Is this length conversion exact?
Yes. Since 1959 the inch has been defined as exactly 2.54 cm and the foot as exactly 0.3048 m, so imperial and metric lengths convert with exact factors. Results here are rounded only for display.