Inches to CM—Convert Inches to Centimeters

Need to convert inches to cm for Amazon furniture, TV size, or height? It’s simple: 1 inch = 2.54 cm.

In the USA we use inches, but most products from IKEA, Amazon International, and clothes use cm. This free tool converts instantly.

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Inches to CM Converter

Convert inches (in) to centimeters (cm), or cm to inches, instantly. 1 inch = 2.54 cm. The standard length conversion.

Amount

Inches → CM CM → Inches

⇅

Result

2.54 cm

1 in × 2.54 = 2.54 cm

Common conversions

1 inch 9 inches 12 inches 20 inches 55 inches 72 inches

What is an Inch?

An inch is a unit of length in the imperial and U.S. customary systems of measurement. It is used in the United States to measure small distances and objects.

An inch is 1/12 of a foot, or exactly 2.54 cm. Used in the USA for height, screen size, length, clothing measurements, tools, furniture, paper size, and everyday objects.

Key facts:

• Symbol: in or ″ (double prime)
• Length: Exactly 2.54 centimeters (since 1959, by international agreement)
• Feet: 12 inches = 1 foot
• Yards: 36 inches = 1 yard
• Meters: 1 inch = 0.0254 meters

Handy conversions:

Inches	Centimeters
1	2.54
6	15.24
12	30.48
36	91.44

What is a Centimeter?

A centimeter is a unit of length in the metric system and is used to measure small distances and objects.

A cm is 1/100 of a meter. Used worldwide for small lengths.

• 1 centimeter = 10 millimeters (mm)
• 100 centimeters = 1 meter (m)

Centimeters are commonly used to measure the length, height, or width of everyday objects, such as books, furniture, clothing, and small packages.

Key facts:

• Symbol: cm
• Length: 1/100 of a meter (centi- means “one hundredth”)
• Inches: 1 cm = 0.3937 inches
• Millimeters: 1 cm = 10 mm
• Meters: 100 cm = 1 m

Handy conversions:

Centimeters	Inches
1	0.39
2.54	1
30.48	12
100	39.37

Inches to CM Formula

Going from inches to cm is easy; multiply the number of inches by 2.54. Because 1 inch = exactly 2.54 cm.

The formula to convert inches to centimeters is:

Formula:
cm = inches × 2.54
inches = cm ÷ 2.54

Examples:

• To convert 20 inches to centimeters:
  • 20 × 2.54 = 50.8 cm
  • So, 20 inches = 50.8 centimeters.

Inches	Calculation	Centimeters
1 in	1 × 2.54	2.54 cm
5 in	5 × 2.54	12.7 cm
10 in	10 × 2.54	25.4 cm
12 in	12 × 2.54	30.48 cm
36 in	36 × 2.54	91.44 cm

Reverse Formula (cm to inches)

Going from cm to inches? Do the opposite—divide the number of cm by 2.54. because 1 inch = 2.54 cm.

• Convert 10 cm to inches
  • inches = 10 ÷ 2.54
  • inches ≈ 3.94 in
  • So, 10 cm ≈ 3.94 inches

• Convert 50 cm to inches.
  • inches = cm ÷ 2.54
  • inches = 50 ÷ 2.54
  • inches ≈ 19.69 in
  • So, 50 cm ≈ 19.69 inches

Inches to Cm Conversion Table

Here’s a handy Inches to Centimeters conversion table:

Inches	CM
1 in	2.54 cm
2 in	5.08
3 in	7.62
4 in	10.16
5 in	12.70
6 in	15.24
7 in	17.78
8 in	20.32
9 in	22.86 cm
10	25.40
11	27.94
12 in	30.48 cm
13	33.02
14	35.56
15	38.10
16	40.64
17	43.18
18	45.72
19	48.26
20 in	50.8 cm
24	60.96
30	76.20
36	91.44
48	121.92
55 in	139.7 cm
60	152.40
72 in	182.88 cm
100	254.00

Quick Reference (Key Values)

• 1 inch = 2.54 cm
• 10 inches = 25.4 cm
• 12 inches = 30.48 cm (1 foot)
• 36 inches = 91.44 cm (3 feet)
• 39.37 100 (1 meter)

Real-Life USA Examples:

In the United States, inches are commonly used to measure height, screen sizes, clothing, furniture, and everyday objects.

TV Size:

• You buy a 55-inch TV in the USA
  • 55 × 2.54 = 139.7 cm
  • 55 inches to cm = 139.7 cm diagonally.

Note: Measure your wall before buying.

Height of a Person:

• Someone who is 5 feet 9 inches tall has 70 inches of height.
  • Height: 5 ft 9 in = 69 inches = 175.26 cm.

Clothing & Waist Size:

• Your jeans say 32-inch waist
  • 32 in × 2.54 = 81.28 cm
  • So a 32-inch waist is ≈ 81 cm.

Frequently Asked Questions