Buying a monitor or TV and seeing “27-inch” or “55-inch” doesn’t always give you a clear sense of the actual size, especially if you’re used to centimeters. The US uses inches while most of the rest of the world uses centimeters, so screen sizes and dimensions often need converting. pomiai’s calculator lets you convert inches and centimeters instantly, just by typing a number.
Common conversion reference
- 1 inch = 2.54 cm
- 27 inches (common monitor size) = about 68.6 cm
- 55 inches (common TV size) = about 139.7 cm
- 65 inches (large TV size) = about 165.1 cm
- 10 cm = about 3.94 inches
How to use it
- The tool opens with the “Length” category and inch → cm already selected.
- Type an inch or centimeter number into the value field.
- The result updates instantly.
- Need feet or millimeters? Just switch the unit dropdowns.
Frequently asked questions
How many centimeters is exactly 1 inch?
1 inch is exactly 2.54 cm — a fixed international standard value.
What does a monitor or TV’s inch size actually measure?
It’s typically the diagonal screen length measured in inches. The centimeter value this calculator gives you is that same diagonal measurement.
Can I convert shoe sizes with this too?
This tool does a pure length unit conversion (inches/cm). Shoe sizes vary by brand and country, so it’s best to check a dedicated size chart for those.
Is it free?
Yes, it’s free to use directly in your browser with no sign-in required.
🔢 Check out other unit converters
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