Inches to Centimetres
Type a value in inches and see it in centimetres — exact conversion, updated as you type.
Formula: centimetres = inches × 2.54 · Reverse: centimetres to inches →
| Inches | Centimetres |
|---|---|
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 5 in | 12.7 cm |
| 10 in | 25.4 cm |
| 25 in | 63.5 cm |
| 50 in | 127 cm |
| 100 in | 254 cm |
About this tool
One inch equals exactly 2.54 centimetres — the definition agreed internationally in 1959 — so this conversion never involves rounding in the factor itself. Screens, tyres, paper sizes and US product dimensions all start in inches and often need to land in centimetres.
Fractions are the usual stumbling block: 5/8 inch = 0.625 in = 1.5875 cm. Enter decimals in the tool and it handles the rest.
How to use it
- Enter the value in inches in the box above.
- Read the result in centimetres — it updates as you type.
- Use the table for common values, or the reverse link to convert the other way.
Frequently asked questions
How do I convert inches to centimetres?
Use the formula: centimetres = inches × 2.54. Or simply type the value into the converter above — it applies the same formula instantly.
How many cm is 5/8 inch?
5/8 inch is 0.625 inches, which is 1.5875 cm.
Is this conversion exact?
Yes — the factor behind this pair is an exact international definition, and the tool shows up to 10 significant digits, so nothing is lost to rounding until the final display.