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Cm to Inches - Inches to Cm Converter

Convert Centimeters to Inches (cm to inch) and Inches to Centimeters (inches to cm)

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Centimeter - Inches Conversion


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Formula to Convert Cm to Inches and Convert Inches to Cm

How many inches in cm ?

Formula to convert centimeters (cm) to inches (in):

inches = centimeters * 0.393701

For example, to convert 10 centimeters to inches, multiply by 0.393701:

10 cm * 0.393701 = 3.93701 in


How many centimeters in an inch? (cm to inches)

Formula to convert inches (in) to centimeters (cm):

centimeters = inches * 2.54

To convert 3 inches to centimeters, multiply by 2.54:

3 in * 2.54 = 7.62 cm

Cm to Inch Conversion: Everything You Need to Know

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  • The centimeter is the base unit of length in the metric system.
  • The inch is the base unit of length in the US Customary Units and British Imperial Units systems of measurement.
  • One inch is equal to 2.54 centimeters. One centimeter is equal to 0.393701 inches.
  • Centimeters are commonly used to measure small objects, such as rulers, pencils, and coins.
  • Inches are commonly used to measure larger objects, such as lumber, furniture, and appliances.
  • Many countries around the world use the metric system, but the United States and the United Kingdom still use the US Customary Units and British Imperial Units systems of measurement.
  • The word "centimeter" comes from the Latin words "centum" (meaning "hundred") and "metrum" (meaning "meter"). It was first defined in the 18th century as one one-hundredth of a meter.
  • The word "inch" comes from the Old English word "ynce", which means "thumb". It is thought to have originated from the practice of measuring the width of a thumb to determine the length of an inch.
  • The inch is a much older unit of measurement than the centimeter. It has been used in England since at least the 10th century. The centimeter was only first defined in the 18th century, as part of the development of the metric system.
  • The first ruler with both centimeters and inches was invented in the 19th century
Here is a cm vs inch comparison table:
CharacteristicCentimeter (cm)Inch (in)
System of measurementMetric systemUS Customary Units and British Imperial Units
DefinitionOne one-hundredth of a meterOne-twelfth of a foot
Equivalent to0.393701 inches2.54 centimeters
Common usesMeasuring small objects, clothing, textile items, engineering drawings, communicating with people in other countriesMeasuring larger objects, furniture, appliances, building materials, communicating with people in the United States and Canada
Symbol cmin
Use centimeters when:
  • Measuring small objects, such as coins, screws, or jewelry.
  • Measuring clothing or other textile items.
  • Working with engineering or manufacturing drawings.
  • Communicating with people in other countries, as the metric system is the international system of units.
Use inches when:
  • Measuring larger objects, such as furniture, appliances, or building materials.
  • Working with US Customary Units or British Imperial Units.
  • Buying or selling items that are typically measured in inches, such as lumber, hardware, or clothing.
  • Communicating with people who are more familiar with inches.
Here are some interesting examples of cm to inch conversions:
  • The average human height is about 170 centimeters, which is equal to 66.93 inches.
  • The average length of a human fingernail is about 1 centimeter, which is equal to 0.393701 inches.
  • The average human thumb is about 2.5 centimeters wide. This means that it is about one inch wide.
  • A standard pencil is about 18 centimeters long. This means that it is about 7 inches long.
  • The average length of a football field is 100 yards, which is equal to 91.44 meters, which is equal to 358.76 inches.
  • The average diameter of a basketball is 24.6 centimeters, which is equal to 9.69 inches.
  • The average diameter of a baseball is 7 centimeters, which is equal to 2.75 inches.

Centimeter to Inches (cm to inch) Conversion Table

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Centimeter (cm) Inch (inches)

2 cm

0.787 inches

3 cm

1.181 inches

3.5 cm

1.378 inches

5 cm

1.969 inches

6 cm

2.362 inches

7 cm

2.756 inches

8 cm

3.15 inches

9 cm

3.543 inches

10 cm

3.937 inches

11 cm

4.331 inches

12 cm

4.724 inches

13 cm

5.118 inches

15 cm

5.906 inches

16 cm

6.299 inches

17 cm

6.693 inches

18 cm

7.087 inches

19 cm

7.48 inches

20 cm

7.874 inches

21 cm

8.268 inches

22 cm

8.661 inches

23 cm

9.055 inches

24 cm

9.449 inches

25 cm

9.843 inches

26 cm

10.236 inches

27 cm

10.63 inches

29 cm

11.417 inches

30 cm

11.811 inches

32 cm

12.598 inches

33 cm

12.992 inches

35 cm

13.78 inches

38 cm

14.961 inches

40 cm

15.748 inches

42 cm

16.535 inches

45 cm

17.717 inches

48 cm

18.898 inches

50 cm

19.685 inches

52 cm

20.472 inches

53 cm

20.866 inches

54 cm

21.26 inches

Inches to Centimeters (inches to cm) Conversion Table

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Inch (inches) Centimeter (cm)
1 inches 2.54 cm
1.5 inch 3.81 cm
2 inches 5.08 cm
3 inches 7.62 cm
3.5 inches 8.89 cm
4 inches 10.16 cm
4.5 inches 11.43 cm
5 inches 12.7 cm
5.5 inches 13.97 cm
6 inches 15.24 cm
6.5 inches 16.51 cm
7 inches 17.78 cm
8 inches 20.32 cm
8.5 inches 21.59 cm
9 inches 22.86 cm
9.5 inches 24.13 cm
10 inches 25.4 cm
11 inches 27.94 cm
12 inches 30.48 cm
13 inches 33.02 cm
14 inches 35.56 cm
7.5 inches 19.05 cm
15 inches 38.1 cm
16 inches 40.64 cm
17 inches 43.18 cm
19 inches 48.26 cm
18 inches 45.72 cm
20 inches 50.8 cm
21 inches 53.34 cm
22 inch 55.88 cm
23 inches 58.42 cm
24 inches 60.96 cm
25 inches 63.5 cm
26 inches 66.04 cm
27 inches 68.58 cm
28 inches 71.12 cm
30 inches 76.2 cm
31 inch 78.74 cm
32 inches 81.28 cm

Frequently Asked Questions on Converting Cm to Inches and Inches to Cm

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  • 11.811 inches

  • 23.622 inches

  • 19.685 inches

  • 15.748 inches

  • 7.874 inches

  • 5.906 inches

  • 9.843 inches

  • 7.087 inches

  • 31.496 inches

  • 47.244 inches

  • 35.433 inches

  • 3.937 inches

  • 12.7 cm

  • 5.906 inches

  • 3.937 inches