US and metric measurements

Inches to Centimeters Converter

Convert inches to centimeters, or swap the units to convert centimeters to inches. Decimal and fractional inch inputs are supported.

Purple ruler with centimeter and inch scales beside Inches and cm ↔ in

Convert your measurement

Use a decimal or a fraction, such as 3.5 or 3 1/2.

How to convert inches to centimeters

Multiply inches by 2.54: centimeters = inches × 2.54. One international inch is exactly 2.54 centimeters.

Example: 8.5 inches

8.5 × 2.54 = 21.59 cm. This is useful for comparing a dimension in a US product listing with a measurement taken in centimeters.

Centimeters to inches

Swap the units and divide centimeters by 2.54: inches = centimeters ÷ 2.54. For example, 10 cm ≈ 3.937008 in.

Can I enter fractional inches?

Yes. When inches is the input unit, enter 1/2 or 3 1/2, as well as decimal values such as 3.5. A result in inches also includes an approximate fraction at your chosen rounding precision.

For screen sizes, remember that the advertised measurement normally describes the diagonal. Converting that diagonal does not give the screen width or height.

Inches to centimeters conversion table

Common in to cm conversions (rounded to six decimal places)
incm
12.54
25.08
512.7
1025.4
1230.48
3691.44

Conversion factors use international inches, feet, yards and miles. Display rounding does not change the underlying calculation. Use a period for decimal inputs; fractional inch results are approximate.