Inches to Centimeters Converter
Convert inches (in) to centimeters (cm) instantly. Type a value above and the result updates while you type. 1 inch equals 2.54 centimeters.
Result updates as you type. Values are calculated locally in your browser — nothing is sent to a server.
The formula
1 inch = 2.54 centimeters
Multiply the inches value by 2.54 to get centimeters. Or divide by 0.393701 to go the other way.
Inches to centimeters conversion table
| in | cm |
|---|---|
| 1 | 2.54 |
| 2 | 5.08 |
| 3 | 7.62 |
| 4 | 10.16 |
| 5 | 12.7 |
| 6 | 15.24 |
| 7 | 17.78 |
| 8 | 20.32 |
| 9 | 22.86 |
| 10 | 25.4 |
| 15 | 38.1 |
| 20 | 50.8 |
| 25 | 63.5 |
| 50 | 127 |
| 75 | 190.5 |
| 100 | 254 |
Worked examples
- 5 in × 2.54 = 12.7 cm
- 12 in × 2.54 = 30.48 cm
- 27 in × 2.54 = 68.58 cm
Conversion factors follow the exact international definitions (SI/BIPM; imperial units per the 1959 International Yard and Pound Agreement, maintained by NIST). NIST unit conversion reference
Factors last verified August 2026 · Built by Jeffrey Tepper.
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Frequently asked questions
How many centimeters are in 1 inch?
1 inch equals 2.54 centimeters (in → cm).
How do you convert inches to centimeters?
Multiply the number of inches by 2.54. For example: 10 in × 2.54 = 25.4 cm.
What is 50 in in cm?
50 in equals 127 cm.
Which is bigger: 1 inch or 1 centimeter?
1 inch is bigger: it equals 2.54 centimeters.