Square Footage Calculator Guide
Understanding Square Footage
Square footage is the standard measurement for area in the US. It's used for everything from real estate listings to flooring orders. Calculating it is simple for rectangles, but trickier for complex shapes.
The Basic Formula
Area (sq ft) = Length (ft) × Width (ft)
If your measurements are in inches, divide by 144 to get square feet (Length" × Width" / 144).
Measuring Odd Shapes
L-Shaped Rooms
Divide the room into two separate rectangles.
- Measure Rectangle A (Length × Width)
- Measure Rectangle B (Length × Width)
- Add them together.
Triangles & Circles
Use geometry formulas for non-rectangular spaces.
- Triangle: (Base × Height) / 2
- Circle: 3.14159 × Radius²