How Many Centimeters Is 8 Inches To Centimeters Converter, Inches To Centimeters Converter
To convert an inch measurement to a centimeter measurement, multiply the length by the conversion ratio.
Since one inch is equal to 2.54 centimeters, you can use this simple formula to convert:
How Many Centimeters are in an Inch?
There are 2.54 centimeters in an inch, which is why we use this value in the formula above.
1″ = 2.54 cm
Our inch fraction calculator can add inches and centimeters together, and it also automatically converts the results to US customary, imperial, and SI metric values.
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Inches and centimeters are both units used to measure length. Keep reading to learn more about each unit of measure.

Inches
An inch is a unit of linear length measure equal to 1/12 of a foot or 1/36 of a yard. Because the international yard is legally defined to be equal to exactly 0.9144 meters, one inch is equal to 2.54 centimeters.<1>
The inch is a US customary and imperial unit of length. Inches can be abbreviated as in; for example, 1 inch can be written as 1 in.
Inches can also be denoted using the ″ symbol, otherwise known as a double-prime. Often a double-quote (“) is used instead of a double-prime for convenience. A double-prime is commonly used to express 1 in as 1″.
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The standard ruler has 12″, and is a common measuring tool for measuring inches. They are also often measured using tape measures, which commonly come in lengths from 6' – 35'. Other types of measuring devices include scales, calipers, measuring wheels, micrometers, yardsticks, and even lasers.
Centimeters
One centimeter is equal to one-hundredth (1/100) of a meter, which is defined as the distance light travels in a vacuum in a 1/299,792,458 second time interval.
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The centimeter, or centimetre, is a multiple of the meter, which is the SI base unit for length. In the metric system, “centi” is the prefix for 10-2. Centimeters can be abbreviated as cm; for example, 1 centimeter can be written as 1 cm.
Metric rulers typically have 30 cm, which are represented by 30 large tick marks. To get a rough idea of the actual length of a centimeter, a standard pencil is just about 1 cm thick.
We recommend using a ruler or tape measure for measuring length, which can be found at a local retailer or home center. Rulers are available in imperial, metric, or combination with both values, so make sure you get the correct type for your needs.
Need a ruler? Try our free downloadable and printable rulers, which include both imperial and metric measurements.
Inch to Centimeter Conversion Table
1″ | 2.54 cm |
2″ | 5.08 cm |
3″ | 7.62 cm |
4″ | 10.16 cm |
5″ | 12.7 cm |
6″ | 15.24 cm |
7″ | 17.78 cm |
8″ | 20.32 cm |
9″ | 22.86 cm |
10″ | 25.4 cm |
11″ | 27.94 cm |
12″ | 30.48 cm |
13″ | 33.02 cm |
14″ | 35.56 cm |
15″ | 38.1 cm |
16″ | 40.64 cm |
17″ | 43.18 cm |
18″ | 45.72 cm |
19″ | 48.26 cm |
20″ | 50.8 cm |
21″ | 53.34 cm |
22″ | 55.88 cm |
23″ | 58.42 cm |
24″ | 60.96 cm |
25″ | 63.5 cm |
26″ | 66.04 cm |
27″ | 68.58 cm |
28″ | 71.12 cm |
29″ | 73.66 cm |
30″ | 76.2 cm |
31″ | 78.74 cm |
32″ | 81.28 cm |
33″ | 83.82 cm |
34″ | 86.36 cm |
35″ | 88.9 cm |
36″ | 91.44 cm |
37″ | 93.98 cm |
38″ | 96.52 cm |
39″ | 99.06 cm |
40″ | 101.6 cm |
References
National Institute of Standards and Technology, Checking the Net Contents of Packaged Goods, Handbook 133 – 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.133-2019.pdf