1 in = 2.54 cm
One inch equals exactly 2.54 centimeters, defined by international agreement since 1959.
Conversion Formula
cm = inches x 2.54
Quick Converter
Inches to Centimeters Reference Table
| Inches (in) | Centimeters (cm) |
|---|---|
| 0.1 in | 0.254 cm |
| 0.5 in | 1.27 cm |
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 3 in | 7.62 cm |
| 5 in | 12.7 cm |
| 10 in | 25.4 cm |
| 15 in | 38.1 cm |
| 20 in | 50.8 cm |
| 25 in | 63.5 cm |
| 50 in | 127 cm |
| 75 in | 190.5 cm |
| 100 in | 254 cm |
| 150 in | 381 cm |
| 200 in | 508 cm |
| 250 in | 635 cm |
| 500 in | 1270 cm |
| 750 in | 1905 cm |
| 1000 in | 2540 cm |
| 5000 in | 12700 cm |
How to Convert Inches to Centimeters
To convert inches to centimeters, use the formula: cm = inches x 2.54. One inch equals exactly 2.54 centimeters, defined by international agreement since 1959.
Quick Example
10 in = 25.4 cm
About the Inches to Centimeters Conversion
Since the 1959 international yard and pound agreement, the inch has been defined as exactly 2.54 cm, making this conversion precise rather than approximate. It is essential whenever US-sized goods are sold into metric markets.
Worked example: A 32-inch waist equals 32 x 2.54 = 81.28 centimeters. A 55-inch TV measures 139.7 cm across the diagonal.
Common Uses
In practice, converting inches to centimeters comes up most often for converting clothing and waist sizes, measuring TV and monitor diagonals, reading US tool and hardware dimensions, and sizing picture frames and prints.