CM to Inches Converter

Centimetres one way, inches the other — edit either box and the other follows.

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Type in either box — the other updates at once. 1 inch = 2.54 centimetres exactly.

Results update instantly as you type.

Conversion
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Centimetres
0 cm
Inches
0 in
Feet and inches
0 ft 0 in

How to Use This CM to Inches Converter

  1. 1.Type a length in either box. Centimetres on the left, inches on the right.
  2. 2.Read the other box. It converts at once — no button to press.
  3. 3.Check feet and inches too. Shown below for heights and room sizes.
  4. 4.Remember the factor. Divide cm by 2.54 for inches, or multiply inches by 2.54 for cm.
  5. 5.Use it anywhere. Screen sizes, heights, sewing and furniture all switch units this way.

FAQ

How many inches is 100 cm?

100 cm equals 39.37 inches, because 100 ÷ 2.54 = 39.3701, which rounds to 39.37 inches.

How do I convert inches back to cm?

Multiply by 2.54. For example, 12 inches × 2.54 = 30.48 cm, which is exactly one foot.

Is the inch defined exactly in centimetres?

Yes. Since 1959 the international inch has been defined as exactly 2.54 centimetres, so this conversion is exact, not approximate.

Is this cm to inches converter free?

Yes — 100% free, no sign-up, no limits. Everything runs in your browser; none of your numbers are uploaded or saved.

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