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What is a square foot?

The US home and commercial interior area unit

Definition

The square foot equals 929.03 square centimetres. It is the dominant unit for US home interior area and commercial space leasing. A 1500 ft² US home is typical suburban size (≈ 140 m²). Office space in the US is priced per ft² per year.

Common uses

  • US home interior floor areas
  • US commercial office lease pricing
  • Retail space in US shopping malls

🌍 Real-world scale

A US suburban home is 1500–2500 ft². Manhattan office rents $60–120 per ft²/year. A small studio apartment is 400 ft².

Convert from square feet

11 conversions
Square Foot to Square Meter1 ft² = 0.0929 m²Square Foot to Square Kilometer1 ft² = 9.2903e-8 km²Square Foot to Square Centimeter1 ft² = 929.03 cm²Square Foot to Square Millimeter1 ft² = 92,903.04 mm²Square Foot to Hectare1 ft² = 9.2903e-6 haSquare Foot to Acre1 ft² = 2.2957e-5 acSquare Foot to Square Inch1 ft² = 144 in²Square Foot to Square Yard1 ft² = 0.1111 yd²Square Foot to Square Mile1 ft² = 3.5870e-8 mi²Square Foot to Rai1 ft² = 5.8064e-5 raiSquare Foot to Dunam1 ft² = 9.2903e-5 dunam

Convert to square feet

11 conversions
Square Meter to Square Foot1 m² = 10.7639 ft²Square Kilometer to Square Foot1 km² = 10,763,910.42 ft²Square Centimeter to Square Foot1 cm² = 0.001076 ft²Square Millimeter to Square Foot1 mm² = 1.0764e-5 ft²Hectare to Square Foot1 ha = 107,639.1 ft²Acre to Square Foot1 ac = 43,560 ft²Square Inch to Square Foot1 in² = 0.006944 ft²Square Yard to Square Foot1 yd² = 9 ft²Square Mile to Square Foot1 mi² = 27,878,400 ft²Rai to Square Foot1 rai = 17,222.26 ft²Dunam to Square Foot1 dunam = 10,763.91 ft²

Tips

  • 1 ft² ≈ 0.0929 m². To convert m² to ft², multiply by 10.76.
  • For quick mental estimates: 100 ft² ≈ 10 m² (exact: 9.29 m²).
  • Commercial leases quote annual rate per ft² — confirm inclusive or per-year.

Common mistakes

  • Reading a UK property listing's "sq ft" as UK imperial square feet — they are identical to US.
  • Treating 1 ft² as just over 1 m² — actually ten times smaller.
  • Using ft² and ft interchangeably — one is area, the other length.

FAQ about the square foot

What is a square foot?
The square foot equals 929.03 square centimetres. It is the dominant unit for US home interior area and commercial space leasing. A 1500 ft² US home is typical suburban size (≈ 140 m²). Office space in the US is priced per ft² per year.
Where is the square foot used?
The square foot is commonly used for: US home interior floor areas; US commercial office lease pricing; Retail space in US shopping malls.
What is an example of a square foot in real life?
A US suburban home is 1500–2500 ft². Manhattan office rents $60–120 per ft²/year. A small studio apartment is 400 ft².
What category does the square foot belong to?
The square foot is a unit of area, part of the 12-unit area category on UnitConv.
How accurate are square foot conversions?
All conversion factors follow NIST and BIPM international standards to 8 significant figures — the highest practical accuracy.
Explore all 12 area units and their conversions.🗺️ Area hub →