Convert inches to cm

Inch

Definition
An inch (symbol: in) is a length unit in the Imperial and U.S. customary systems. Since 1959 it’s defined as exactly 25.4 mm. There are 12 inches in a foot and 36 inches in a yard.

Ursprung
The name “inch” traces back to the Latin uncia (“one-twelfth”), originally denoting one-twelfth of a Roman foot. Early measures included three barleycorns end-to-end or the average width of three thumbs, before standardizing via the international yard.

Modern användning
Inches remain the default in the United States, Canada, and the U.K. for construction, hardware dimensions, and screen diagonals. They also appear in electronics globally (e.g., monitor and smartphone sizes).

Centimeter

Definition
A centimeter (symbol: cm) is an SI unit of length equal to one-hundredth of a meter (0.01 m). It belongs to the metric system’s straightforward decimal framework.

Ursprung
Built from the prefix centi- (Latin centum “hundred”) plus “meter,” the centimeter forms part of the metric family of prefixes—from kilo- (10³) to nano- (10⁻⁹)—facilitating easy scaling.

Modern användning
Centimeters are used worldwide wherever a finer division of the meter is needed: measuring height, small objects, school rulers, and many scientific applications outside the U.S.

Inch → Centimeter Conversion Table

Hur man konverterar

• 1 in = 2.54 cm

• 1 cm = 0.39370079 in

Exempel

Convert 15 in to cm:

15 in × 2.54 cm/in = 38.10 cm