Inch to Centimeter 转换器
Convert Inch (in) to Centimeter (cm) instantly. 1 in = 2.54 cm.
Length转换器
31个单位可用
1 in = 2.54 cm
公式：
cm = in × 2.54With your value: 1 in = 2.54 cm
How big is that?
Everyday references on a logarithmic scale, all expressed in inch so you can sanity-check the result.
Other Inch to Centimeter conversions
Inch to Centimeter 转换表
| Inch (in) | Centimeter (cm) |
|---|---|
| 0.5 | 1.27 |
| 1 | 2.54 |
| 2 | 5.08 |
| 5 | 12.7 |
| 10 | 25.4 |
| 15 | 38.1 |
| 20 | 50.8 |
| 25 | 63.5 |
| 50 | 127 |
| 100 | 254 |
| 250 | 635 |
| 500 | 1,270 |
| 1000 | 2,540 |
Centimeter to Inch 转换表
| Centimeter (cm) | Inch (in) |
|---|---|
| 0.5 | 0.19685 |
| 1 | 0.393701 |
| 2 | 0.787402 |
| 5 | 1.968504 |
| 10 | 3.937008 |
| 15 | 5.905512 |
| 20 | 7.874016 |
| 25 | 9.84252 |
| 50 | 19.685039 |
| 100 | 39.370079 |
| 250 | 98.425197 |
| 500 | 196.850394 |
| 1000 | 393.700787 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Inch (in)
Length
1 inch = 25.4 mm exactly, fixed by the 1959 international yard and pound agreement.
Source: International Yard and Pound Agreement of 1959; NIST Federal Register Notice 59-5442
US, UK, Canada, Australia, New Zealand, South Africa · Reviewed 2026-07-01
Centimeter (cm)
Length
Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Inch to Centimeter
To convert from Inch (in) to Centimeter (cm), multiply the value by 2.54.
公式： cm = in × 2.54
反向： in = cm × 0.3937007874
分步示例
- Start with your value in Inch. For example: 5 in
- Multiply by the conversion factor: 5 x 2.54
- The result is: 12.7 cm
关于Inch
The inch is an imperial unit equal to 1/12 of a foot or 2.54 centimeters. It is widely used in the US and UK for small measurements.
趣味事实： The inch was historically defined as the width of a man's thumb.
常见用途： screen sizes, construction, clothing.
关于Centimeter
The centimeter equals one hundredth of a meter. It is commonly used for everyday measurements of length.
常见用途： body measurements, clothing, furniture.
Frequently Asked Questions
How many Centimeter are in 1 Inch?
There are exactly 2.54 Centimeter in 1 Inch. This means the conversion factor from Inch to Centimeter is 2.54.
What is the formula to convert Inch to Centimeter?
The formula to convert Inch to Centimeter is: cm = in × 2.54. For example, to convert 10 Inch to Centimeter, you would multiply 10 by 2.54.
What is a Inch?
The inch is an imperial unit equal to 1/12 of a foot or 2.54 centimeters. It is widely used in the US and UK for small measurements.
What is a Centimeter?
The centimeter equals one hundredth of a meter. It is commonly used for everyday measurements of length.
What are the common uses of Inch?
The Inch is commonly used in screen sizes, construction, clothing.
相关Length转换
Cite this page
UnitConvertLab. (2026). Inch to Centimeter converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/inch-to-centimeter