Inches to CM●
Inches in. Centimetres out. Convert dimensions in a moment.
Length
Use a decimal point (2.54), scientific notation (1e3), or feet + inches (5 ft 11 in).
Feet + inches detected. The source unit is set to feet. Swap converts the value to the other unit.
Fractional results are rounded to the nearest 1/16 inch.
Try a value
Pick an example to startThe formula
centimetres = inches × 2.54
One international inch is exactly 2.54 centimetres. Multiply the number of inches by 2.54 to get centimetres.
A worked example
For 10 in, multiply 10 by 2.54. The result is exactly 25.4 centimetres.
10 × 2.54 = 25.4 cm
Quick reference
Reference values are rounded to 6 decimal places. Use the converter above for other values or precision.
| Inches (in) | Centimetres (cm) |
|---|---|
| 1 | 2.54 |
| 2 | 5.08 |
| 5 | 12.7 |
| 6 | 15.24 |
| 10 | 25.4 |
| 12 | 30.48 |
| 24 | 60.96 |
| 36 | 91.44 |
| 100 | 254 |
All equivalent units
The same value, in every supported unit.
Length conversions
For sizes quoted in inches.
Use this conversion for screen sizes, clothing and furniture measurements, tyre widths and product dimensions listed in inches. Results use decimal centimetres, so 25.4 cm means twenty-five point four centimetres.
Calculation details & precision
Length conversions use metres as the base unit. The international inch is exactly 0.0254 m; a foot is 12 inches, an international mile is 1,609.344 m, and an international nautical mile is 1,852 m.
Automatic displays up to 12 significant digits. Choose 2, 4 or 6 decimal places in Precision for a shorter result. Displayed results are rounded; very large or small values use scientific notation.
Common questions
Do I multiply or divide by 2.54?
Multiply inches by 2.54 to get centimetres. In the other direction, divide centimetres by 2.54 to get inches.
How many centimetres are in 12 inches?
12 inches is exactly 30.48 centimetres, which is one foot.