What is 20 inches in cm

›› Convert inch to centimetre

›› More information from the unit converter

How many inches in 1 cm? The answer is 0.39370078740157.
We assume you are converting between inch and centimetre.
You can view more details on each measurement unit:
inches or cm
The SI base unit for length is the metre.
1 metre is equal to 39.370078740157 inches, or 100 cm.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between inches and centimetres.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of inches to cm

1 inches to cm = 2.54 cm

5 inches to cm = 12.7 cm

10 inches to cm = 25.4 cm

15 inches to cm = 38.1 cm

20 inches to cm = 50.8 cm

25 inches to cm = 63.5 cm

30 inches to cm = 76.2 cm

40 inches to cm = 101.6 cm

50 inches to cm = 127 cm

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You can do the reverse unit conversion from cm to inches, or enter any two units below:

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›› Definition: Inch

An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot. The inch is usually the universal unit of measurement in the United States, and is widely used in the United Kingdom, and Canada, despite the introduction of metric to the latter two in the 1960s and 1970s, respectively. The inch is still commonly used informally, although somewhat less, in other Commonwealth nations such as Australia; an example being the long standing tradition of measuring the height of newborn children in inches rather than centimetres. The international inch is defined to be equal to 25.4 millimeters.

›› Definition: Centimeter

A centimetre (American spelling centimeter, symbol cm) is a unit of length that is equal to one hundreth of a metre, the current SI base unit of length. A centimetre is part of a metric system. It is the base unit in the centimetre-gram-second system of units. A corresponding unit of area is the square centimetre. A corresponding unit of volume is the cubic centimetre.

The centimetre is a now a non-standard factor, in that factors of 103 are often preferred. However, it is practical unit of length for many everyday measurements. A centimetre is approximately the width of the fingernail of an adult person.

›› Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!

Convert 20 inches to cm

One inch equals 2.54 centimeters, to convert 20 inches to cm we have to multiply the amount of inches by 2.54 to obtain the width, height or length in centimeters. 20 inches is equal to 20 inches x 2.54 = 50.8 cm. The result is the following:

20 inches = 50.8 cm

Definition of inch

An inch (symbol: in) is a unit of length. It is defined as 1⁄12 of a foot, also is 1⁄36 of a yard. Though traditional standards for the exact length of an inch have varied, it is equal to exactly 25.4 mm. The inch is a popularly used customary unit of length in the United States, Canada, and the United Kingdom.

Definition of centimeter

The centimeter (symbol: cm) is a unit of length in the metric system. It is also the base unit in the centimeter-gram-second system of units. The centimeter practical unit of length for many everyday measurements. A centimeter is equal to 0.01 (or 1E-2) meter.

Inches to centimeters formula and conversion factor

To calculate a inch value to the corresponding value in centimeters, just multiply the quantity in inches by 2.54 (the conversion factor).

Inches to centimeters formulae

centimeters = inches * 2.54

The factor 2.54 is the result from the division 1 / 0.393701 (centimeter definition). Therefore, another way would be:

centimeters = inches / 0.393701

Using our inches to centimeters converter you can get answers to questions like:

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