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Centimetres to inches (cm to in)

Convert centimetres to inches (1 in = 2.54 cm exactly), with a quick-reference table up to 150 cm.

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An inch is exactly 2.54 cm, so inches = centimetres ÷ 2.54 (equivalently × 0.3937008). A 30 cm ruler is 11.81 in, a 60 cm-wide cabinet is 23.62 in and a 100 cm waist is 39.37 in.

Typical uses: sizing clothes from a European size chart in centimetres, checking whether furniture listed in cm fits a space you measured in inches, or reading product dimensions on an import. For heights, the feet-and-inches converter splits the result into feet and inches.

How to use it

  1. Type the value in the first box; the converted value appears in the second box as you type.
  2. Or type in the second box to convert the other way.
  3. Use the Decimals menu to round, and the quick-reference table for common values.

Frequently asked questions

How many inches is 1 cm?

0.3937 in. Put the other way, 1 in = 2.54 cm exactly.

How do I convert cm to feet and inches?

Divide by 2.54 for inches, then by 12 for feet: 170 cm = 66.93 in = 5 ft 6.9 in. The feet-and-inches to cm page does this split for you.

Why does my tape measure show 30.5 cm at 12 inches?

Because 12 in × 2.54 = 30.48 cm, which rounds to 30.5 on a tape with millimetre marks.

Is the conversion exact?

Yes. The inch has been defined as exactly 25.4 mm since 1959, so any error comes only from rounding the displayed result.

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