Inches to Centimeters Converter
Formula
cm = inches × 2.54
To convert inches to centimeters, multiply the inch value by 2.54. This is an exact conversion — one inch is defined as precisely 2.54 centimeters.
How to use
- Enter the Length in Inches you want to convert.
- Read the result in centimeters below.
- Adjust the value to convert any other length.
Example
Convert 12 inches: 12 × 2.54 = 30.48 cm. So one foot equals exactly 30.48 centimeters.
Frequently Asked Questions
How many cm is 12 inches?
12 inches (1 foot) equals exactly 30.48 cm.
How many cm is 1 inch?
1 inch equals exactly 2.54 cm.
How do I convert a height like 5 feet 9 inches to centimeters?
First convert the height entirely to inches: 5 feet 9 inches is (5 x 12) + 9 = 69 inches. Then multiply by 2.54 to get 175.26 cm. This two-step method works for any height given in feet and inches.
How do I convert centimeters back to inches?
Divide the centimeter value by 2.54, since multiplying by 2.54 is what converts inches to cm in the first place. For instance, 100 cm divided by 2.54 is about 39.37 inches. This reverse conversion is useful when reading metric product specs and you think in inches.