Inches to Centimeters Converter
Type a value in inches to get it in centimeters, and see the reverse conversion.
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Inches to Centimeters Converter by TheCalcTools
How the Inches to Centimeters Converter works
The international inch is exactly 2.54 cm. Multiply inches by 2.54 to get centimetres; a foot (12 inches) is 30.48 cm.
To convert inches to centimeters, multiply by 2.54. The calculator shows the result to 6 significant figures; the conversion factor itself is exact by definition.
Quick estimate in your head: multiply by 2.5 and add a little (2.54 exactly).
The formula
Worked example
Using the default values shown in the calculator:
| Value in inches (in) | 12 |
|---|
- 12 in × 2.54 = 30.48 cm.
Result:
| Centimeters (cm) | 30.48 |
|---|---|
| 1 in in cm | 2.54 |
| Your number read as cm, in in | 4.72441 |
| Millimetres (mm) | 304.8 |
| Meters (m) | 0.3048 |
Conversion table
| in | cm |
|---|---|
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 3 in | 7.62 cm |
| 4 in | 10.16 cm |
| 5 in | 12.7 cm |
| 6 in | 15.24 cm |
| 8 in | 20.32 cm |
| 10 in | 25.4 cm |
| 12 in | 30.48 cm |
| 24 in | 60.96 cm |
| 36 in | 91.44 cm |
| 48 in | 121.92 cm |
Frequently asked questions
What is 1 inch in centimeters?
1 inch (in) equals 2.54 cm.
How many cm is a 32-inch TV?
The diagonal is 32 × 2.54 = 81.28 cm.
Sources and further reading
- Wikipedia: Inch
- Wikipedia: Foot (unit)
- NIST: Guide for the Use of the International System of Units (SI)
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This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.