Screen Inches to CM Converter
TV and monitor sizes are always advertised by diagonal measurement. Use this to convert a screen's diagonal size between centimeters and inches.
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Common Screen Sizes
| Device | Inches | CM |
|---|---|---|
| iPhone 15 Pro | 6.1" | 15.5 |
| iPad 10.9" | 10.9" | 27.7 |
| 13" Laptop | 13.3" | 33.8 |
| 14" Laptop | 14" | 35.6 |
| 15.6" Laptop | 15.6" | 39.6 |
| 24" Monitor | 24" | 61 |
| 27" Monitor | 27" | 68.6 |
| 32" Monitor | 32" | 81.3 |
| 34" Ultrawide | 34" | 86.4 |
| 43" TV | 43" | 109.2 |
| 55" TV | 55" | 139.7 |
| 65" TV | 65" | 165.1 |
| 75" TV | 75" | 190.5 |
| 85" TV | 85" | 215.9 |
Quick Facts
- •1 inch = 2.54 cm exactly
- •55" TV = 139.7 cm diagonal
- •Screen size is measured diagonally
- •Actual viewable area depends on bezel width
Related Converters
Frequently Asked Questions
How do I convert screen inches to cm?
Multiply inches by 2.54. A 55" TV = 55 × 2.54 = 139.7 cm diagonal.
What is a 65" TV in cm?
65 × 2.54 = 165.1 cm diagonal.
Is screen size measured diagonally?
Yes. Screen size is always the diagonal corner-to-corner measurement.
What is a 27" monitor in cm?
27 × 2.54 = 68.58 cm diagonal.
Why do we use inches for screens?
Historical convention from US manufacturing. Many countries still use inches for screen sizes.