Inches to centimetres converter
Convert inches to centimetres, and centimetres back to inches.
Inch (in) ⇄ Centimetre (cm)
Works offline1 Inch (in) = 2.54 Centimetre (cm)
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How the conversion works
1 inch = 2.54 centimetres exactly, so cm = inches × 2.54.
Quick reference table
| Inch (in) | Centimetre (cm) |
|---|---|
| 1 Inch (in) | 2.54 Centimetre (cm) |
| 2 Inch (in) | 5.08 Centimetre (cm) |
| 5 Inch (in) | 12.7 Centimetre (cm) |
| 6 Inch (in) | 15.24 Centimetre (cm) |
| 10 Inch (in) | 25.4 Centimetre (cm) |
| 12 Inch (in) | 30.48 Centimetre (cm) |
| 24 Inch (in) | 60.96 Centimetre (cm) |
| 55 Inch (in) | 139.7 Centimetre (cm) |
When you need this
Screen sizes, tailoring, tyre and pipe sizes, and passport-photo dimensions often mix inches and centimetres. A 55-inch TV, for example, is about 140 cm along the diagonal.
Frequently asked questions
How many cm is 1 inch?
Exactly 2.54 cm.
How do I convert cm to inches?
Type the centimetres in the second box, or divide by 2.54.
Is a TV size the width or the diagonal?
Screen sizes are measured along the diagonal, not the width.
More tools you may need
Page reviewed 25 October 2026.