Convert inches to feet

Inch

Definition
An inch (symbol: in) is a length measure in the Imperial and U.S. customary systems. Since 1959, one inch has been defined as exactly 25.4 mm. There are 12 inches in a foot and 36 inches in a yard.

Ursprung
The term “inch” comes from the Latin uncia (“one-twelfth”), reflecting its original role as one-twelfth of a Roman foot. Early definitions variously tied an inch to three barleycorns end-to-end or to the average width of three thumbs before standardization via the international yard.

Modern användning
Inches are still standard in the U.S., Canada, and the U.K. for everything from construction and carpentry to screen and display sizes. Electronics manufacturers worldwide also use inches to specify monitor and smartphone diagonals.

Foot

Definition
A foot (symbol: ft) is an Imperial and U.S. customary length unit fixed at exactly 0.3048 m since 1959. Each foot comprises 12 inches, and three feet equal one yard.

Ursprung
Across history, “foot” measurements ranged from roughly 250 mm to 335 mm based on local customs and human anatomy. In 1959, nations using the Imperial and U.S. systems agreed on a uniform international foot of 0.3048 m to resolve these variations.

Modern användning
Feet remain the default in the U.S., Canada, and U.K. for everyday measures—personal height, room dimensions, sports fields, and aviation altitudes. Our site lets you switch between feet and inches or metric units in a single click.

Inch → Foot Conversion Table

Hur man konverterar

• 1 in = 0.08333333 ft

• 1 ft = 12 in

Exempel

Convert 15 in to feet:

15 in × 0.08333333 ft/in = 1.25 ft