CM to Inches

Convert cm to inches instantly.

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Value

Decimals

From

1 Centimetre =

0.39370079 Inch

1 Centimetre = 0.39370079 Inch · 1 Inch = 2.54 Centimetre, multiply by 0.39370079

Nanometre10,000,000
Micrometre10,000
Millimetre10
Centimetre1
Metre0.01
Kilometre0.00001
Inch0.39370079
Foot0.0328084
Yard0.01093613
Mile0.00000621
Nautical mile0.0000054

Converted in your browser. Nothing you enter is sent anywhere.

Centimetre to Inch, quick reference

Centimetre	Inch
1	0.39370079
2	0.78740157
5	1.968504
10	3.937008
20	7.874016
25	9.84252
50	19.685039
100	39.370079
250	98.425197
500	196.8504
1,000	393.7008

How to Convert CM to Inches Quickly

Centimetres are used on Indian school rulers, tailors’ tapes and furniture catalogues, while inches still rule TV and laptop screen sizes, photo frames and anything bought from the US. This page opens set to centimetre to inch, so you type the number and the answer is already there.

Along with the main result you see the conversion factor, a list of the same length in every other unit from millimetres to miles, and a quick reference table running from 1 to 1,000 centimetres.

No software to install Free Works on any device

Steps to Change Centimetres into Inches

1

1. Type the centimetres

Enter the number in the Value box. Decimals such as 39.6 work, and so do fractions like 3/4 or 12 1/2.
2

2. Read the inches

The large result shows the length in inches, with a line underneath saying 1 cm equals 0.393701 in and the multiplier used.
3

3. Round it if you like

Choose a number of decimal places from the Decimals menu. Auto trims needless zeros; 1 or 2 suits most everyday measuring.
4

4. Swap for inches to cm

Press the arrows between From and To to reverse the direction, then press Copy on the result to paste it anywhere.

Try it now

How Many Inches in a Centimetre?

One inch is exactly 2.54 centimetres, a value fixed by international agreement in 1959. So one centimetre is about 0.3937 inches, and you divide centimetres by 2.54 to get inches. A 30 cm school ruler is 11.81 inches long, a 15.6 inch laptop screen measures 39.6 cm corner to corner, and an A4 sheet at 21 by 29.7 cm is 8.27 by 11.69 inches.

Why Use Unit Converters?

Recipes, fuel prices, weather reports and product listings mix metric and imperial units all the time. A converter gives the exact figure straight away, so you are not guessing how many grams make a cup.

“Get the unit right, and the rest of the job goes smoothly.”

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Speed in km/h and mph
Results as you type

Popular Uses for Measurement Conversion

These are the conversions people look up most in daily life.

Following recipes Change cups and ounces in an American recipe into grams and millilitres.
Height and length Turn centimetres into feet and inches for a form, or back again.
Weather and fever Convert Fahrenheit to Celsius when reading a thermometer or a foreign forecast.
Land and property Convert acres, hectares and square feet when comparing plots or flats.
Storage sizes Work out how many MB are in a GB before buying a data plan.
Driving abroad Convert miles per hour to km/h so speed limits make sense in another country.
Shopping online Compare a product weight in pounds with kilograms before ordering from abroad.
Roman numerals Read the year on a building, film credit or clock face written in numerals.

What the CM to Inches Converter Shows

Exact factor

Uses the defined 2.54 cm per inch, so results match engineering drawings and product specifications.

Every length unit at once

Below the answer, the same length appears in millimetres, metres, feet, yards, kilometres, miles and more.

Reference table

Ready-made rows for 1, 2, 5, 10, 20, 25, 50, 100, 250, 500 and 1,000 centimetres in inches.

Rounding choice

Pick from 0 to 8 decimal places, or leave it on Auto for a tidy figure.

Other categories

Buttons along the top switch to area, weight, volume and other measures without leaving the page.

Why Use ToolXkit for CM to Inches?

Your files stay with you

Everything runs inside your browser. Nothing you open or type is uploaded to a server.

Conversion Tools for Different Users

Students

Check science homework and convert answers into the SI units teachers expect.

Home cooks and bakers

Follow recipes from any country without buying a new set of cups.

Travellers

Make sense of distances, speeds and temperatures on trips abroad.

Builders and engineers

Switch between feet, metres, PSI and bar on drawings and site notes.

Online sellers

List product weights and sizes in the units buyers in each country expect.

Developers

Convert bytes, number bases and data sizes while sizing storage or reading dumps.

Best Times to Convert Units

A unit converter is useful when you are:

Baking from a foreign recipe
Filling in height and weight
Reading a weather forecast abroad
Comparing land or flat sizes
Buying a phone data plan
Driving in another country
Shipping a parcel overseas
Checking homework answers

Tips for Measuring in Inches

Screen sizes are measured diagonally. Measure your TV corner to corner in centimetres and convert to compare it with an advert.
For a quick estimate in your head, multiply centimetres by 4 and divide by 10. It is close enough for a shopping trip.
Converting height? The result is in inches only. Divide by 12 for feet and use the remainder as inches, so 170 cm is 66.93 in, or 5 ft 6.9 in.
Photo frame sizes like 4 by 6 or 8 by 10 are in inches. Convert your print size first to be sure it fits.

Frequently Asked Questions

Answers to common questions about this tool.

How do I convert cm to inches?

Divide the number of centimetres by 2.54. For example, 50 cm divided by 2.54 is 19.69 inches. Typing the value here does the division and shows the result to as many decimal places as you choose.

How many inches is 30 cm?

30 cm is 11.81 inches, which is why a standard school ruler is marked with about 12 inches on the other edge. The reference table on this page lists other common lengths too.

Is 2.54 exact or rounded?

It is exact. Since 1959 the international inch has been defined as precisely 25.4 millimetres, so conversions based on it carry no rounding error of their own.

How do I convert my height from cm to feet and inches?

Convert to inches here, then divide by 12. The whole number is feet and the remainder is inches. For example, 165 cm is 64.96 inches, which is 5 feet and about 5 inches.

What size is a 55 inch TV in cm?

Swap the units and enter 55. A 55 inch screen is 139.7 cm measured diagonally. The width and height depend on the shape of the screen, usually 16 by 9.

How precise are the results from CM to Inches?

Conversions use the official defined factors, such as exactly 2.54 centimetres to an inch. Results show enough decimal places for everyday use and school work, so you can round them as the task needs.

Why do cups to grams change with the ingredient?

A cup measures volume, not weight. A cup of flour weighs much less than a cup of sugar or honey, so the converter needs to know what you are measuring to give the right figure.

Is a US gallon the same as a UK gallon?

No. A US gallon is about 3.785 litres and a UK gallon about 4.546 litres. Check which one a recipe, car manual or fuel figure uses before converting.

Is CM to Inches easy to use on a mobile?

Yes. It is built to work on small screens, with large boxes for typing numbers. The answer appears as soon as you enter a value, so it is quick to use in a shop or kitchen.

Do I need to pay or sign up for CM to Inches?

Neither. It is free, it opens straight away, and nothing you type is stored, so use it as often as a recipe or homework sheet needs.

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