Centimeters-to-Inches Converter
Fast, accurate and free online cm to cale tool running directly in your browser.
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| Centymetry | Cale |
|---|---|
| 1 cm | 0,394 cala |
| 2 cm | 0,787 cala |
| 5 cm | 1,969 cala |
| 10 cm | 3,937 cala |
| 15 cm | 5,906 cala |
| 20 cm | 7,874 cala |
| 25 cm | 9,843 cala |
| 30 cm | 11,811 cala |
| 40 cm | 15,748 cala |
| 50 cm | 19,685 cala |
| 60 cm | 23,622 cala |
| 80 cm | 31,496 cala |
| 100 cm | 39,37 cala |
| 170 cm | 66,929 cala |
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Other tools you may find usefulCentimeters to inches - comparison of length measurements in the metric and inch systems
A centimeter (symbol: cm) is a unit of length in the metric system, constituting one hundredth of a meter. An inch (symbol: in or ″) is a traditional unit of length from the English and Roman systems of measurement, used today mainly in the USA, Canada and the UK. Despite the dominance of the metric system in Europe, inches are still present in our everyday life. We use them to determine the diagonals of TV, monitor and smartphone screens, measure the diameter of plumbing pipes, the width of car tires, and also when shopping for clothes (jeans waist and leg length sizes are given in inches).
Our free online centimeters to inches converter allows for quick and error-free calculations, facilitating the purchase of electronics, clothing and renovation and construction works.
Formula for converting centimeters to inches
In 1959, under an international agreement, the inch dimension was unified, permanently linking it to the metric system:
1 inch (in) = exactly 2.54 cm
Therefore, to convert the length expressed in centimeters (dcm) into inches (din), divide the number of centimeters by 2.54 or multiply by the factor 0.393701:
din= dcm/ 2.54
To do the reverse operation and convert inches to centimeters, we multiply the number of inches by 2.54:
dcm= din× 2.54
Conversion table: centimeters (cm) to inches (in)
The table below helps you quickly get an idea of the dimensions without using a calculator:
| Length in centimeters (cm) | Length in inches (in) | Typical use / Example |
|---|---|---|
| 2.54 cm | 1 in | Thumb width adult man. |
| 10 cm | 3.94 in | The width of the palm of your hand or a standard payment card. |
| 15 cm | 5.91 in | Length of a small school ruler or large smartphone screen (approx. 6 inches). |
| 30 cm | 11.81 in | The standard length of a human foot or a large ruler. |
| 50 cm | 19.69 in | The size of a small kitchen TV or the width of a small cabinet. |
| 81 cm | 31.89 in | Pants waist size (32 inches) or TV diagonal 32 inches. |
| 100 cm | 39.37 in | Exactly 1 meter (just over 39 inches). |
| 140 cm | 55.12 in | Diagonal of a very popular living room TV (55 inches). |
Where is the most common way to convert centimeters to inches?
The centimeters and inches converter is crucial in many industries:
- Consumer electronics:Device screens (TV, computer monitors, tablets) are measured diagonally in inches. For example, a 65-inch TV has a screen with a diagonal length of approximately 165 cm.
- Hydraulics and pneumatics:The diameters of pipes, connection threads and garden hoses are given in fractions of an inch (e.g. pipe 1/2 inch, 3/4 inch, thread 1 inch). Understanding these measurements prevents you from purchasing mismatched fittings.
- Automotive:The diameter of car and motorcycle rims is given only in inches (e.g. 17", 19" rims). The tire width is given in millimeters, but the diameter of the seat on the rim is given in inches.
Frequently Asked Questions (FAQ)
What is the history of the inch as a unit of measurement?
The inch (English:inch) originally corresponded to the width of an adult male's thumb. In 1324, King Edward II of England issued a royal charter in which he defined an inch as the length of three dry, round barley grains placed side by side, taken from the center of the ear.
What does the quotation mark symbol (″) next to a number mean?
A double prime (often replaced by a regular quotation mark ″) is a symbol for an inch in the technical and English world (e.g. 15″ means 15 inches). A single prime (′) denotes a foot (e.g. 5′ means 5 feet).
How to choose the size of pants in inches based on centimeters?
Measure your waist circumference in centimeters, then divide the result by 2.54. The resulting value is your waist size (marked with the letter W - e.g. W32). The length of the leg from the crotch (marked L - e.g. L34) is also converted by dividing the length in cm by 2.54.
How many centimeters are in an inch in plumbing?
In hydraulics, the so-called "pipe inch" (thread inch) is not the same as geometric inch (2.54 cm). For historical reasons, pipe marked 1-inch has an inside diameter of approximately 25 mm, but its outside diameter (with thread) is approximately 33.25 mm. It is worth remembering this when measuring with a caliper.
How to quickly convert cm to inches in your memory?
To quickly estimate the result in your mind, multiply the centimeters by 0.4 (e.g. 50 cm × 0.4 = 20 inches). The result obtained is very close to the actual value (19.69 inches).