cm to Inches Conversion (Centimeters To Inches) - Inch Calculator (2024)

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

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Result in Inches:

cm to Inches Conversion (Centimeters To Inches) - Inch Calculator (1)

1 cm = 0.393701 in
1 cm ≈ 25/64"
*inch fraction is rounded to nearest 1/64"

Learn how we calculated this below

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How to Convert Centimeters to Inches


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Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.

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cm to Inches Conversion (Centimeters To Inches) - Inch Calculator (3)

Ethan has a PhD in astrophysics and is currently a satellite imaging scientist. He specializes in math, science, and astrophysics.

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Sexton, J. (n.d.). Centimeters to Inches Conversion Calculator. Inch Calculator. Retrieved June 10, 2024, from

To convert a measurement in centimeters to a measurement in inches, you can use a simple formula.Since one inch is equal to 2.54 centimeters, the formula used to convert is:

inches = centimeters ÷ 2.54

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

For example, here's how to convert 5 centimeters to inches using the formula above.

inches = (5 cm ÷ 2.54) = 1.968504"

cm to Inches Conversion (Centimeters To Inches) - Inch Calculator (4)

How Many Inches Are in a Centimeter?

There are 0.393701 inches in a centimeter, which is why we use this value in the formula above.

1 cm = 0.393701"

How to Convert Centimeters to Fractional Inches

We covered how to convert centimeters to inches, but you may still be wondering how to convert centimeters to fractional inches.

To do so, begin by converting cm to inches using the conversion formula above to get the resulting decimal, and then round to the nearest fractional inch.The number to the left of the decimal is the number of whole inches, and the numbers to the right of the decimal are what will be rounded to the nearest fractional inch.

To round, take the number to the right of the decimal point from the decimal result, and multiply it by the level of precision you need.You can round to the nearest 1/16, 1/32, or 1/64 of an inch.

To round to the nearest 1/16 of an inch, for instance, take the decimal portion and multiply it by 16.Then, round that result to the nearest whole number to get the numerator of the fractional inch measurement in 16ths of an inch.

For example, let's convert 3 cm to fractional inches with 1/16” precision following these steps.

Step 1: Divide 3 by 2.54 to convert cm to inches in decimal form.

3 cm ÷ 2.54 = 1.1811 in

Step 2: Multiply the decimal remainder by 16.

0.1811 × 16 = 2.8976

Step 3: Round this value to the nearest whole number; in this case, 2.8976 can be rounded to 3.Place this value in a fraction over 16, so 3/16 is the remaining fraction.

Step 4: Put it all together by placing the whole number from the decimal form in front of the fraction.

3 cm ≈ 1 3/16"

Note that we now use the "approximately equal" sign above since we rounded, and thus 3 cm is not exactly equal to 1 and 3/16 inches.

Our inch fraction calculator can add centimeters and inches together, and it also automatically converts the results to US customary, imperial, and SI metric values.

Centimeters and inches are both units used to measure length. Keep reading to learn more about each unit of measure.

cm to Inches Conversion (Centimeters To Inches) - Inch Calculator (5)

What Is a Centimeter?

One centimeter is equal to one-hundredth (1/100) of a meter, which is defined as the distance light travels in a vacuum in 1/299,792,458 of a second.One centimeter is equal to 0.393701 inches.

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 hundredths, or 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 number 2 pencil is just about 1 cm thick.

Learn more about centimeters.

What Is an Inch?

An inch is a unit of length 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″.

cm to Inches Conversion (Centimeters To Inches) - Inch Calculator (6)

The standard ruler is 12 inches long and is a common tool for measuring a length in inches.Another frequently used tool to perform measurements in inches is a tape measure, which commonly comes in lengths from 6' - 35'.Other types of devices used to make measurements in inches include scales, calipers, measuring wheels, micrometers, yardsticks, and even lasers.

Learn more about inches.

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 a combination of 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.

cm to Inches Conversion Chart

Chart of centimeter measurements converted to inches and fractional inches rounded to the nearest 1/64"
CentimetersInches (decimal)Inches (fraction)
1 cm0.393701"25/64"
2 cm0.787402"25/32"
3 cm1.1811"1 3/16"
4 cm1.5748"1 37/64"
5 cm1.9685"1 31/32"
6 cm2.3622"2 23/64"
7 cm2.7559"2 3/4"
8 cm3.1496"3 5/32"
9 cm3.5433"3 35/64"
10 cm3.937"3 15/16"
11 cm4.3307"4 21/64"
12 cm4.7244"4 23/32"
13 cm5.1181"5 1/8"
14 cm5.5118"5 33/64"
15 cm5.9055"5 29/32"
16 cm6.2992"6 19/64"
17 cm6.6929"6 11/16"
18 cm7.0866"7 3/32"
19 cm7.4803"7 31/64"
20 cm7.874"7 7/8"
21 cm8.2677"8 17/64"
22 cm8.6614"8 21/32"
23 cm9.0551"9 1/16"
24 cm9.4488"9 29/64"
25 cm9.8425"9 27/32"
26 cm10.24"10 15/64"
27 cm10.63"10 5/8"
28 cm11.02"11 1/32"
29 cm11.42"11 27/64"
30 cm11.81"11 13/16"
31 cm12.2"12 13/64"
32 cm12.6"12 19/32"
33 cm12.99"12 63/64"
34 cm13.39"13 25/64"
35 cm13.78"13 25/32"
36 cm14.17"14 11/64"
37 cm14.57"14 9/16"
38 cm14.96"14 61/64"
39 cm15.35"15 23/64"
40 cm15.75"15 3/4"


  1. National Institute of Standards and Technology, Checking the Net Contents of Packaged Goods, Handbook 133 - 2019 Edition,

More Centimeter & Inch Conversions

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  • centimeters to yards
  • centimeters to feet
  • centimeters to kilometers
  • centimeters to meters
  • centimeters to millimeters
  • centimeters to micrometers
  • centimeters to nanometers
  • miles to inches
  • yards to inches
  • feet to inches
  • kilometers to inches
  • meters to inches
  • millimeters to inches
  • micrometers to inches
  • nanometers to inches
cm to Inches Conversion (Centimeters To Inches) - Inch Calculator (2024)


How many inches is 1 cm in inches? ›

1 cm = 0.393701 inches.

What is 40 cm by 30 cm in inches? ›

30 x 40 cm is 11 3/4 x 15 3/4 inches.

How many inches is 5 cm in inches? ›

To convert 5 cm into inches, multiply 5 cm by 0.393701 inches. Therefore 5 cm is equal to 1.9685 inches.

What is the formula for centimeters to inches? ›

There are 2.54 centimeters in 1 inch. Using the conversion number of 0.3937, the conversion formula for converting x centimeters to inches is this: x centimeters * 0.3937 = inches.

What is 50 cm by 70 cm in inches? ›

My wife has a digital copy of a 50cm x 70cm poster, and want to print it out. Converting this to inches, technically it's 19.7" x 27.5".

What is cm 20 in inch? ›

Answer: 20 centimeters equals 7.87402 inches.

To convert centimeters to inches we have to divide that number by 2.54. Centimeter is a unit of length in the metric system while inches is part of the US customary system of measurement.

Is 30 cm 1 inch? ›

Answer: 30 cm equals 11.811 inches.

Centimeter is a prefix used in the SI metric system where meter is the standard unit of length measurement.

How wide is 40 cm in inches? ›

There are 15.748 inches in 40 centimeters (cm). To convert between centimeters and inches, you need to know how these units are related to each other in size. One centimeter is equal to 0.393701 inches.

How do you convert cm to inches to feet? ›

Step 1: Convert cm to inches: Divide the length value by 2.54. Step 2: Now divide the obtained value in step 1 by 12 to get value in feet. Step 3: Subtract the product of 12 and obtained feet in step 2 from obtained value in step 1. Step 4: Now, write the value of length in feet and inches.

What is 80 to 120 cm in inches? ›

A: You can convert centimeters to inches by multiplying it by 0.4. 80-120 centimeters is equal to 32-48 inches.

How many cm makes 1 inch? ›

Inch Metric Fundamentals

1 inch is therefore exactly 2.5400 centimeters. Conversely, 1 centimeter is exactly 0.3937 inches.

How do you convert cm to inches mentally? ›

All you need to do is multiply the number of centimeters by 0.39 to get the equivalent measurement in inches. For example, if you have 20 centimeters, you would multiply 20 by 0.39 to get 7.8 inches.

How do you convert 4ocm to inches? ›

To figure out how many inches is equivalent to 40 cm, you need to multiply 0.393701 (the number of inches in one centimeter) by 40 (the number of centimeters you have). This tells you that 40 cm is equivalent to 15.748 inches.

How do I change word from cm to inches? ›

Go to File > Options > Advanced. Scroll down to Display. Select the unit you want in Show measurements in units of. Select OK.

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