Inches to Centimeters
Convert inches (in) to centimeters (cm). Free, fast and easy to use.
How it works
One inch is defined as exactly 2.54 centimeters. Multiply the number of inches by 2.54 to get centimeters — a 27-inch screen diagonal, for example, is 68.58 cm.
Formula
cm = in × 2.54
Worked examples
- 27 in = 68.58 cm
- 55 in = 139.7 cm
- 6 in = 15.24 cm
Calculations run locally in your browser. Results are for information only — for engineering, electrical or financial decisions, verify the assumptions and applicable standards.
Frequently asked questions
How many centimeters is 1 inch?
Exactly 2.54 centimeters. The inch has been defined this way internationally since 1959.
How big is a 55-inch TV in cm?
Screen size is measured diagonally: 55 inches × 2.54 = 139.7 cm.
Related calculators
Conversion table
| Inches (in) | Centimeters (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 |
| 20 in | 50.8 cm |
| 24 in | 60.96 cm |
| 27 in | 68.58 cm |
| 32 in | 81.28 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 |