Inches to Centimeters Converter
1 inch = 2.54 centimeters
1 inch equals 2.54 centimeters
How to convert inches to centimeters
Feet, inches, yards and miles use the international foot (0.3048 m). Older US survey-foot records use a different definition; check the survey document before applying these factors.
cm = in × 2.54One inch is 2.54 centimeters, so a single multiplication converts any value.
25.4 cm = 10 × 2.54Inches to centimeters conversion table
Common values in inches, converted to centimeters.
| Inches (in) | Centimeters (cm) |
|---|---|
| 1 | 2.54 |
| 2 | 5.08 |
| 3 | 7.62 |
| 4 | 10.16 |
| 5 | 12.7 |
| 10 | 25.4 |
| 20 | 50.8 |
| 25 | 63.5 |
| 50 | 127 |
| 100 | 254 |
| 250 | 635 |
| 500 | 1,270 |
| 1,000 | 2,540 |
About these units
inchin
Exactly 2.54 centimetres since the 1959 international agreement.
Reference: International Yard and Pound Agreement (1959).
centimetercm
One hundredth of a metre, widely used for body and object measurements.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.