Convert inches to cm (2025)

Convert inches to cm (1)

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Please provide values below to convert inch [in] to centimeter [cm], or vice versa.


Inch

Definition: An inch (symbol: in) is a unit of length in the imperial and US customary systems of measurement. An inch was defined to be equivalent to exactly 25.4 millimeters in 1959. There are 12 inches in a foot and 36 inches in a yard.

History/origin: The term "inch" was derived from the Latin unit "uncia" which equated to "one-twelfth" of a Roman foot.

There have been a number of different standards for the inch in the past, with the current definition being based on the international yard. One of the earliest definitions of the inch was based on barleycorns, where an inch was equal to the length of three grains of dry, round barley placed end-to-end. Another version of the inch is also believed to have been derived from the width of a human thumb, where the length was obtained from averaging the width of three thumbs: a small, a medium, and a large one.

Current use: The inch is mostly used in the United States, Canada, and the United Kingdom. It is also sometimes used in Japan (as well as other countries) in relation to electronic parts, like the size of display screens.

Centimeter

Definition: A centimeter (symbol: cm) is a unit of length in the International System of Units (SI), the current form of the metric system. It is defined as 1/100 meters.

History/origin: A centimeter is based on the SI unit meter, and as the prefix "centi" indicates, is equal to one hundredth of a meter. Metric prefixes range from factors of 10-18 to 1018 based on a decimal system, with the base (in this case the meter) having no prefix and having a factor of 1. Learning some of the more commonly used metric prefixes, such as kilo-, mega-, giga-, tera-, centi-, milli-, micro-, and nano-, can be helpful for quickly navigating metric units.

Current use: The centimeter, like the meter, is used in all sorts of applications worldwide (in countries that have undergone metrication) in instances where a smaller denomination of the meter is required. Height is commonly measured in centimeters outside of countries like the United States.

Inch to Centimeter Conversion Table

Inch [in]Centimeter [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

How to Convert Inch to Centimeter

1 in = 2.54 cm
1 cm = 0.3937007874 in

Example: convert 15 in to cm:
15 in = 15 × 2.54 cm = 38.1 cm

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Convert inches to cm (2025)

FAQs

Is 1 inch 4 cm? ›

Inches to Centimeter Chart
Inches (in)Centimeters (cm)
1 in2.54 cm
2 in5.08 cm
3 in7.62 cm
4 in10.16 cm
11 more rows

What size is 5 inches in cm? ›

Inches to Centimeters Conversion Chart
Inches (in or “)Centimeters (cm)
5 in12.70 cm
6 in15.24 cm
7 in17.78 cm
8 in20.32 cm
13 more rows

How many centimeters is 12 inches? ›

1 inch is approximately equal to 2.54 centimeters. By the unitary method, 12 inches = 30.48 centimeters, but it shows only 30 cm on the ruler.

What is the formula for 1 inch to cm? ›

We know that 1 inch = 2.54 cm.

How large is 5 cm? ›

1.9685 inches

Is 5cm 1 inch? ›

Solution: We know that 1 cm is approximately equal to 0.393701 inches. To convert 5 cm into inches, multiply 5 cm by 0.393701 inches. Therefore 5 cm is equal to 1.9685 inches.

What size is 7 inches in cm? ›

Inches to cm Conversion Chart
InchesCentimeters
7 in17.78 cm
8 in20.32 cm
9 in22.86 cm
10 in25.4 cm
35 more rows

What size is 10cm? ›

Answer: 10 cms is equal to 3.93700787 inches

Inches and centimeters are measuring units of length. One Inch is equal to 2.54 centimeters, and there are 39.37 inches in a meter. Centimeters are smaller than Inches.

Is 2 cm the same as 1 inch? ›

The relationship between inch and cm is that one inch is exactly equal to 2.54 cm in the metric system.

What does 1 cm look like in inches? ›

so 1 cm = 1 meter/100 = 0.3937 inches = almost 40% of one inch or 2/5 of an inch.

How many cm is 1 ⁄ 2 inch? ›

Inches to centimeters conversion table
Inches (")Centimeters (cm)
1/2 in1.27 cm
1 in2.54 cm
2 in5.08 cm
3 in7.62 cm
23 more rows

Is 2.5 cm equal to 1 inch? ›

Answer and Explanation:

This tells you that 2.5 cm is the same as 0.984252 inches. Notice that 0.984252 is very close to 1! Actually, to get to a full inch, you'd need to have 2.54 centimeters.

What is 40 inch in cm? ›

Quick lookup: Inches to cm
Inches140
cm2.54101.6

What size is 4 cm in inches? ›

Answer: 4 centimeters (cm) is equal to approximately 1.5748 inches. For practical purposes, this value is often rounded to four decimal places, making it 1.5748 inches.

Is 2 inches 4 cm? ›

One inch is 2.54 cm. So 4 cm = 4 / 2.54 = 1.5748". If you don't need an exact answer then I'd use the approximation 10 cm ≈ 4". This gives 4 cm ≈ 1.6" which might be near enough.

What is 4 cm comparable to? ›

Therefore, 4 centimeters is approximately equal to 1.5748 inches when rounded to four decimal places.

How manycm is in an inch? ›

If you want to know 1 inch is equal to how many cm, then it is very easy to get that calculation. 1 inch = 2.54 cm.

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