Convert Inches to Centimeters

Enter the length in inches below to get the value converted to centimeters.

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1 in = 2.54 cm

How to Convert Inches to Centimeters

conversion scale showing inches and equivalent centimeters length values

To convert a inch measurement to a centimeter measurement, multiply the length by the conversion ratio. One inch is equal to 2.54 centimeters, so use this simple formula to convert:

centimeters = inches × 2.54

The length in centimeters is equal to the inches multiplied by 2.54.

For example, here's how to convert 5 inches to centimeters using the formula above.
5" = (5 × 2.54) = 12.7 cm
infographic showing how to convert inches to centimeters

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.

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.

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 know as a double-prime. Often a double-quote (") is used instead of a double-prime for convenience. Using the double-prime, 1 in can be written as 1″.

A quarter is .955" in diameter, which is just smaller than 1"

The standard ruler has 12", and are 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.

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 1cm 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.

If you need a ruler you can also download and print our free printable rulers, which include both imperial and metric measurements.

Inch Measurements and Equivalent Centimeter Conversions

Common inch values converted to the equivalent centimeter value
Inches Centimeters
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

More Inch Length Conversions

US Customary & Imperial Units
Convert to Miles
1" is equal to 1.5783E-5 miles
Convert to Yards
1" is equal to 0.027778 yards
Convert to Feet
1" is equal to 0.083333 feet
SI Units
Convert to Kilometers
1" is equal to 2.54E-5 kilometers
Convert to Meters
1" is equal to 0.0254 meters
Convert to Millimeters
1" is equal to 25.4 millimeters
Convert to Micrometers
1" is equal to 25,400 micrometers
Convert to Nanometers
1" is equal to 25,400,000 nanometers