INCH TO CM Converter
Convert inches to cm and cm to inches.
Inch ⇄ Centimeter Converter
What is Inch to Cm Conversion?
Inch (in)
Definition: Inch (in): An inch is a unit of length in the Imperial and US customary systems. It is defined as 1/12 of a foot or 1/36 of a yard.
Centimeter (cm): A centimeter is a unit of length in the metric system, defined as 1/100 of a meter.
History:
Inch: Originated from the Old English word ynce, based on the width of a human thumb. Standarized later to exactly 25.4 millimeters in 1959.
Centimeter: Introduced in 1795 during the French Revolution when the metric system was established. It quickly became a global standard for scientific and everyday measurements.
Current Use: Inch is Widely used in the United States, Canada (partially), and the UK for height, screen sizes, and construction.
Centimeter: Used globally in science, education, clothing, medicine, and daily measurements.
Quick Facts
- 1 inch = 2.54 cm (exactly)
- 1 cm = 0.3937 inch (approx.)
- Inch is more common in the US, while cm is more common internationally.
- Centimeters are often used for precise and smaller measurements, while inches are often used for larger, practical measurements.
How to Manually Convert?
The relationship between feet and inches is simple:
- Inches to CM: Multiply inches by 2.54
- CM to Inches: Divide centimeters by 2.54
Example 1: Convert 10 inches to cm
10 × 2.54 = 25.4cm
Example 2: Convert 30 cm to inches
30 ÷ 2.54 ≈ 11.81in
Example 3: Convert 65 inches to cm (human height example)
65 × 2.54 = 165.1cm
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