Square footage measures area in square feet (ftΒ²). One square foot equals a 1 ft Γ 1 ft area (12 in Γ 12 in = 144 square inches).
How to Calculate
- Rectangle: Length Γ Width (10 ft Γ 12 ft = 120 sq ft)
- Irregular rooms: Break into rectangles, calculate each, then add
- Circular area: Ο Γ radiusΒ² (convert to feet first)
Common Conversions
- 1 sq ft = 0.0929 sq meters
- 1 acre = 43,560 sq ft
- 1 sq yard = 9 sq ft
Uses
Real estate pricing ($/sq ft), flooring materials, painting (wall sq ft), landscaping, and HVAC sizing.