Inches to centimeters
1 inch = 2.54 centimeters
For any other value: cm = in × 2.54
Calculator
12.7 cm
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You can leave the unit in: 100 in is fine.
Inches to centimeters chart
The values people look up most.
| inches | centimeters |
|---|---|
| 5 in | 12.7 cm |
| 10 in | 25.4 cm |
| 7 in | 17.78 cm |
| 2 in | 5.08 cm |
| 8 in | 20.32 cm |
| 6 in | 15.24 cm |
| 4 in | 10.16 cm |
| 3 in | 7.62 cm |
| 9 in | 22.86 cm |
| 15 in | 38.1 cm |
| 1 in | 2.54 cm |
| 0.625 in | 1.5875 cm |
| 21 in | 53.34 cm |
| 30 in | 76.2 cm |
| 23 in | 58.42 cm |
| 11 in | 27.94 cm |
| 0.75 in | 1.905 cm |
| 45 in | 114.3 cm |
| 70 in | 177.8 cm |
| 90 in | 228.6 cm |
| 74 in | 187.96 cm |
| 32 in | 81.28 cm |
| 36 in | 91.44 cm |
| 20 in | 50.8 cm |
| 12 in | 30.48 cm |
| 1.5 in | 3.81 cm |
| 71 in | 180.34 cm |
| 38 in | 96.52 cm |
| 85 in | 215.9 cm |
| 37 in | 93.98 cm |
Formula
cm = in × 2.54
Screen sizes are measured diagonally, so a 40 cm screen is not 40 cm wide.
Where this number comes from
This factor is exact, not rounded. Derived from the inch of exactly 25.4 mm (1959 agreement).
Source: NIST Guide to the SI, Appendix B: Conversion Factors, NIST (National Institute of Standards and Technology, USA).
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