How to Use a CM to Inches Converter?

Using a Centimetres to Inches Converter is quick and simple. Follow these steps to convert centimetres (cm) into inches (in):

1. Locate the Input Field:
   Find the input box where you can type in the number of centimetres you want to convert.
2. Enter the Value in Centimetres:
   Type the measurement in centimetres (e.g., 20 cm) into the input field.
3. Click Convert or Calculate:
   Press the “Convert” or “Calculate” button (depending on the tool you’re using).
4. View the Result:
   The tool will instantly show the converted value in inches. For example, 20 cm would convert to 7.874 inches.

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Formula for Manual Conversion

If you’d like to calculate the value yourself, you can use this formula:

• Inches = Centimetres × 0.3937007874

Example: Convert 50 cm to inches:

• 50 × 0.3937007874 = 19.685 inches

Alternatively, if you need to convert back from inches to centimetres:

• Centimetres = Inches × 2.54

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Why Use a Converter?

A CM to Inches Converter is helpful for quickly switching between the metric and imperial measurement systems. It is especially useful for:

• Comparing lengths in different units.
• Calculating dimensions for international projects.
• Converting measurements for personal use, such as height or furniture dimensions.

Now you can easily handle centimetre-to-inch conversions, whether you’re using an online tool or doing it manually!

Centimetre

Definition: A centimetre (symbol: cm) is a unit of length in the International System of Units (SI), which is the modern version of the metric system. It is equal to one hundredth (1/100) of a metre.

History/Origin: The centimetre is derived from the SI base unit, the metre. The prefix “centi-” means one-hundredth, indicating that a centimetre is one hundredth of a metre. Metric prefixes are based on powers of ten, ranging from 10⁻¹⁸ to 10¹⁸. The metre itself has no prefix and is equal to a factor of one. Understanding commonly used prefixes like kilo-, mega-, giga-, tera-, centi-, milli-, micro-, and nano- can be very useful when dealing with metric units.

Current Use: Like the metre, the centimetre is widely used worldwide, especially in countries that use the metric system. It is often used to measure smaller distances or lengths, such as the height of a person, in places outside of the United States.

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Inch

Definition: An inch (symbol: in) is a unit of length used in the imperial and US customary measurement systems. Since 1959, an inch has been defined as exactly 25.4 millimetres. There are 12 inches in a foot and 36 inches in a yard.

History/Origin: The word “inch” comes from the Latin term “uncia,” meaning “one-twelfth,” referring to one-twelfth of a Roman foot. Historically, the inch has had various definitions. One of the earliest was based on the length of three barleycorns placed end to end. Another definition was derived from the width of a human thumb, calculated as the average of a small, medium, and large thumb. Today, the inch is defined based on the international yard.

Current Use: The inch is most commonly used in the United States, Canada, and the United Kingdom. It is also sometimes used in countries like Japan, particularly for measuring electronic components, such as the sizes of screens.

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Centimetre to Inch Conversion Table

Centimetre [cm]	Inch [in]
0.01 cm	0.0039370079 in
0.1 cm	0.0393700787 in
1 cm	0.3937007874 in
2 cm	0.7874015748 in
3 cm	1.1811023622 in
5 cm	1.968503937 in
10 cm	3.937007874 in
20 cm	7.874015748 in
50 cm	19.6850393701 in
100 cm	39.3700787402 in
1000 cm	393.7007874016 in

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How to Convert Centimetres to Inches?

• 1 cm = 0.3937007874 in
• 1 in = 2.54 cm

Example: Convert 15 cm to inches:
15 cm = 15 × 0.3937007874 in = 5.905511811 in