pakmath.com

Inches to Centimeters (in to cm) Converter

1 inch (in) = 2.54 centimeters (cm). To convert inches to centimeters, multiply by 2.54: 55 in × 2.54 = 139.7 cm. Also searched as inches to centimetres.

1 in = 2.54 cm
Convert the other way: Centimeters to Inches

Quick facts

How to convert inches to centimeters

  1. Take the value in inches.
  2. Multiply it by 2.54 (the number of centimeters in one inch).
  3. Round the result to the precision you need.
cm = in × 2.54

Worked example (a 55-inch TV screen): 55 in × 2.54 = 139.7 cm.

To convert centimeters back to inches, multiply by 0.393701, or divide by 2.54.

Converting a person's height? The height converter gives feet and inches directly, with a height chart.

Source: NIST Special Publication 811 (2008), Appendix B; the international yard and pound agreement of 1959 (1 inch = 25.4 mm exactly).

Inches to Centimeters conversion table

Inches to Centimeters conversion table
Inches [in]Centimeters [cm]
0.01 in0.0254 cm
0.1 in0.254 cm
1 in2.54 cm
2 in5.08 cm
3 in7.62 cm
5 in12.7 cm
10 in25.4 cm
20 in50.8 cm
50 in127 cm
100 in254 cm
1000 in2540 cm

in to cm chart from 1 to 100

Centimeters to Inches conversion table

Centimeters to Inches conversion table
Centimeters [cm]Inches [in]
0.01 cm0.0039370079 in
0.1 cm0.0393700787 in
1 cm0.3937007874 in
2 cm0.7874015748 in
3 cm1.1811023622 in
5 cm1.968503937 in
10 cm3.937007874 in
20 cm7.874015748 in
50 cm19.6850393701 in
100 cm39.3700787402 in
1000 cm393.7007874016 in

Inches vs Centimeters

InchCentimeter
Symbolincm
Equals1 in = 2.54 cm1 cm = 0.393701 in

What is an inch?

A US customary and imperial unit equal to exactly 25.4 millimeters, with 12 inches to a foot. Used in the US for screen sizes, paper, tools, and rainfall, and in the UK for height.

What is a centimeter?

One hundredth of a meter — a common everyday metric unit. Used worldwide for height, clothing sizes, and small object measurements outside the US.

Frequently asked questions

How many centimeters are in an inch?

There are 2.54 centimeters in 1 inch (1 in = 2.54 cm).

How many inches are in a centimeter?

There are 0.393701 inches in 1 centimeter (1 cm = 0.3937007874 in).

How do I convert inches to centimeters?

Multiply the number of inches by 2.54. For example, 10 in × 2.54 = 25.4 cm. To convert back, multiply by 0.393701.

What is 10 in in centimeters?

10 in = 25.4 cm.

What is 100 in in centimeters?

100 in = 254 cm.

Is the conversion exact?

Yes. The factor comes from the official definitions of both units (NIST Special Publication 811 (2008), Appendix B; the international yard and pound agreement of 1959 (1 inch = 25.4 mm exactly)). Results are shown to up to 10 decimal places; round them to suit your purpose.

Popular length conversions

Convert inches to other units

Convert other units to centimeters

Open the full length converter with every unit →

Related converters

Reviewed by

Dr. Muhammad Amjad Khadim PhD Mathematics

Dr. Muhammad Amjad Khadim holds a PhD in Mathematics. He writes and reviews the guides on pakmath.com and checks every formula, conversion factor and worked example against published standards and official guidance before it goes live. Spotted an error? Tell us and it will be corrected.

Google Scholar profile (opens in a new tab)

First published 28 October 2026 · Last reviewed 5 November 2026