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Inches to Centimeters (in to cm) Converter

1 in = 2.54 cm

1 Inch equals 2.54 Centimeters (1 in = 2.54 cm). Convert Inches to Centimeters with formula, table, and examples.

One inch equals exactly 2.54 centimeters. This is one of the most commonly needed length conversions, essential for screen sizes, clothing measurements, paper dimensions, and any product comparison between American and international specifications.

How to Convert Inches to Centimeters

cm = in × 2.54
Multiply the value in Inches by 2.54
  1. Take your value in Inches
  2. Multiply by 2.54
  3. Read the result in Centimeters

Common Inches to Centimeters Conversions

Inches (in) Centimeters (cm) Status
0.25 in 0.635 cm
0.5 in 1.27 cm
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
6 in 15.24 cm
8 in 20.32 cm
10 in 25.4 cm
12 in 30.48 cm
18 in 45.72 cm
24 in 60.96 cm
36 in 91.44 cm
48 in 121.92 cm
60 in 152.4 cm
72 in 182.88 cm
100 in 254 cm

Good to Know About Inches to Centimeters Conversion

Screen sizes are measured in inches worldwide, even in metric countries. A German buying a TV will see '55 Zoll' on the label - one of the few imperial units that has become globally standard through industry convention.

Inches to Centimeters: What You Need to Know

A 55-inch TV has a diagonal of 139.7 cm. US Letter paper (8.5 × 11 inches) is 21.59 × 27.94 cm, slightly different from A4 (21.0 × 29.7 cm). Waist sizes in US clothing use inches while European sizes use centimeters. This conversion bridges the gap in shopping, manufacturing, and technical specifications daily.

What is a Inch? in

An imperial unit of length equal to exactly 2.54 centimeters. Commonly used in the US and UK for screen sizes, body measurements, and construction.

Imperial Us-customary screen sizes construction (US) body measurements
Learn more about Inch →

What is a Centimeter? cm

A metric unit of length equal to one hundredth of a meter. Commonly used for body height, clothing sizes, and everyday measurements.

Metric body height clothing furniture
Learn more about Centimeter →

Going the other way? Use our Centimeters to Inches converter.

Inches to Centimeters FAQ

  • One inch equals exactly 2.54 centimeters. This is an exact definition, not an approximation - it was established by the International Yard and Pound Agreement of 1959.

  • Multiply the number of inches by 2.54. For example, 12 inches × 2.54 = 30.48 cm. For rough mental math, multiply by 2.5 for a close estimate.

  • 6 inches equals exactly 15.24 centimeters. This is commonly referenced because 6 inches is about the width of a standard smartphone.

Non-Frequently Asked Questions About Inches to Centimeters

Questions nobody should ask - but someone did.

  • Because the TV industry standardized on inches in America when it dominated global electronics. Now even in Tokyo, Berlin, and Seoul, people shop for 55-inch TVs. The inch conquered the living room where the metric system could not.