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Inches to Centimeters Converter

Convert inches to centimeters by typing a value: the answer appears as you type. One in equals 2.54 cm, so to go from inches to centimeters you multiply by 2.54. A table of common values is included below.

Quick examples
in
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Centimeters25.4 cm
The same number of centimeters in inches
3.937 in

Inches to centimeters table

Inches (in)Centimeters (cm)

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      Formula

      Centimeters = inches × 2.54
      1 in = 2.54 cm
      1 cm = 0.393701 in

      How to use it

      1. Type the number of inches.
      2. Read the result in centimeters.
      3. Open the table for common values, or use the reverse converter to go from centimeters to inches.

      Worked examples

      1 in in centimeters

      Centimeters
      2.54 cm

      15 in in centimeters

      Centimeters
      38.1 cm

      Quick reference

      1 in = 2.54 cm. 2 in = 5.08 cm. 3 in = 7.62 cm. 4 in = 10.16 cm. 5 in = 12.7 cm. 10 in = 25.4 cm. 15 in = 38.1 cm. 20 in = 50.8 cm.

      Good to know

      The inch is defined as exactly 2.54 centimeters, and the foot as exactly 0.3048 meters, so conversions between metric and US customary lengths are exact rather than approximate.

      Questions people ask

      How many centimeters are in 1 in?

      1 in is 2.54 cm.

      How do I convert inches to centimeters?

      Multiply by 2.54. For example, 5 in × 2.54 = 12.7 cm.

      What is 100 in in centimeters?

      100 in is 254 cm.

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