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Centimeters to inches

Convert centimeters to inches in one step. One inch is exactly 2.54 centimeters, so divide centimeters by 2.54.

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How it works

  1. Enter the valueThe units are already set. Type the number.
  2. Read the resultThe converted value appears at once.
  3. Use the tableThe reference table below lists common values.

How to convert cm to inches

Since 1959 the inch has been defined as exactly 2.54 centimeters. To convert, divide the number of centimeters by 2.54: 10 cm is 3.937 inches, 30 cm is 11.811 inches and 100 cm is 39.37 inches. The other way round, multiply inches by 2.54.

Everyday uses include screen sizes, which are measured diagonally in inches, clothing and shoe measurements, picture frames, paper sizes and the height of furniture when you shop on international sites. Use the table below the converter for quick values, and pick feet in the To list if you need a height in feet.

Feet and inches

For body height, convert to feet first: 180 cm is 70.87 inches, which is 5 feet 10.9 inches, since a foot has 12 inches.

Frequently asked questions

How many inches is 1 cm?

1 cm is 0.393701 inches. 2.54 cm make one inch.

How accurate are the conversions?

They use the exact international definitions and show up to 12 significant digits.

Why does my 1 TB drive show 931 GB?

Drive makers count 1 TB as 10^12 bytes, operating systems count in binary units. 10^12 bytes are 931 GiB.

Can I type a comma as decimal separator?

Yes. Both 1,5 and 1.5 are understood.

Does it work offline?

Yes. After the first visit the converter also works without an internet connection.