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Inches to centimeters

Convert inches to centimeters in one step. Multiply inches by 2.54, since one inch is exactly 2.54 cm.

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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.

Where you meet inches

Inches turn up wherever products are made for the US market or sold worldwide with American sizes. Screens are the best example: a 6.1 inch phone has a diagonal of 15.49 cm, a 15.6 inch laptop 39.62 cm, a 27 inch monitor 68.58 cm and a 65 inch TV 165.1 cm. Keep in mind that this is the diagonal, not the width.

Jeans are sized by waist and inseam in inches, so W32 L34 means a waist of 81.28 cm and a leg length of 86.36 cm. Bicycle wheels (26, 27.5 and 29 inches), pipe fittings, photo prints (a 4 x 6 print is 10.16 x 15.24 cm) and pizza sizes are other places where you need the metric value.

Fractions of an inch

Tape measures and hardware often use fractions instead of decimals. Type them as decimals: 1/2 in is 0.5 (1.27 cm), 1/4 in is 0.25 (6.35 mm), 3/8 in is 0.375 (9.525 mm) and 1/16 in is 0.0625 (1.5875 mm). Pick millimeters in the To list when you need finer values for drills and screws.

Frequently asked questions

How many cm is 10 inches?

10 inches are exactly 25.4 cm.

How big is a 55 inch TV in cm?

The diagonal of a 55 inch screen is 139.7 cm. For a 16:9 screen that is about 121.8 cm wide and 68.5 cm high.

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.