Length

What is a Foot? (ft)

Definition

A foot (symbol: ft, plural: feet) is a unit of length in the imperial and US customary systems, equal to 12 inches or exactly 0.3048 meters. It is widely used in the United States for measuring height, altitude, and building dimensions. The foot is one of the oldest units of measurement, historically based on the length of a human foot.

Common Uses

  • › Human height in the US
  • › Altitude and elevation
  • › Building and room heights
  • › Aviation altitude

Converters

Feet to Meters → Feet to Inches → Feet to Miles →

Key Facts

  • Symbol
    ft
  • Category
    Length
  • 1 ft = 12 in
  • 1 ft = 0.3048 m
  • 1 ft = 30.48 cm
  • 3 ft = 1 yard
  • 5,280 ft = 1 mile

Related Terms

About the Foot

A foot (symbol: ft, plural: feet) is a unit of length in the imperial and US customary systems, equal to 12 inches or exactly 0.3048 meters. It is widely used in the United States for measuring height, altitude, and building dimensions. The foot is one of the oldest units of measurement, historically based on the length of a human foot.

Equivalents and conversions

  • 1 ft = 12 in
  • 1 ft = 0.3048 m
  • 1 ft = 30.48 cm
  • 3 ft = 1 yard
  • 5,280 ft = 1 mile

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