Metric Conversions
Metric Conversions

Feet (ft)

A foot is a unit of length defined as exactly 0.3048 meters. It consists of 12 inches and is commonly used in the United States, Liberia, and Myanmar for height, distance, and construction measurements. The foot remains part of the imperial and U.S. customary systems standardized internationally [nist-si-guide].

Origin

The foot originated from various historical measurements based on the length of a human foot. It was standardized by the international yard and pound agreement in 1959, fixing the foot at exactly 0.3048 meters [nist-si-guide].

Worldwide Use

Feet are widely used in the U.S. for building construction, aviation altitudes, and everyday height measurements. Despite global metrication, feet remain common in real estate, sports, and engineering within certain countries [nist-si-guide].

Common References

  • An average adult male height is about 5 feet 9 inches
  • A standard ceiling height in houses is about 8 feet
  • A basketball hoop is 10 feet above the ground
  • A football field is 300 feet long (100 yards)
  • Airport runway lengths are often given in feet
Feet → Meters1 ft = 0.3048 mFeet → Kilometers1 ft = 0.0003 kmFeet → Centimeters1 ft = 30.48 cmFeet → Millimeters1 ft = 304.8 mmFeet → Micrometers1 ft = 304,800 µmFeet → Nanometers1 ft = 304,800,000 nmFeet → Miles1 ft = 0.0002 miFeet → Yards1 ft = 0.3333 ydFeet → Inches1 ft = 12 inFeet → Nautical Miles1 ft = 0.0002 nmiFeet → Fathoms1 ft = 0.1667 ftmFeet → Furlongs1 ft = 0.0015 furFeet → Light Years1 ft = 0 lyFeet → Astronomical Units1 ft = 0 auFeet → Parsecs1 ft = 0 pcFeet → Decimeters1 ft = 3.048 dmFeet → Hectometers1 ft = 0.003 hmFeet → Megameters1 ft = 0 MmFeet → Gigameters1 ft = 0 GmFeet → Chains1 ft = 0.0152 chFeet → Rods1 ft = 0.0606 rdFeet → Thou (Mils)1 ft = 12,000 thFeet → Picometers1 ft = 304,800,000,000 pm