Feet to Inches Converter

Convert feet to inches instantly.

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Common length units

Foot (ft)

Definition: A foot (symbol: ft or ') is a unit of length equal to exactly 0.3048 meters, or 12 inches. It is part of the imperial and US customary systems of measurement.

History/origin: As the name suggests, the foot was historically based on the length of a human foot. Various cultures used their own versions of the foot as a practical unit of measure. The international foot was standardized at exactly 0.3048 m in 1959.

Current use: The foot is primarily used in the United States for altitude in aviation, human height, and real estate. It also remains in common use in the United Kingdom alongside metric units.

Inch (in)

Definition: The inch is a US customary and imperial length unit. Its modern value is exactly 25.4 mm, with 12 inches making one foot.

History/origin: Inch measurements began with body and object references, then moved through English standards before the international yard and pound agreement fixed the inch in metric terms.

Current use: In is common for screens, tools, hardware, lumber, pipes, fabric cuts, tire sizes, product specs, and many household measurements in the United States.