Square Footage Calculator

Basic Formulas

• Rectangle: Length × Width
• Circle: π × Radius²
• Triangle: ½ × Base × Height

Measuring Tips

To get total square footage of a home or project:

1. Break down complex shapes into simple rectangles.
2. Measure the length and width of each section in feet.
3. Calculate the area of each section.
4. Add all areas together.
5. Add a waste factor (typically 10%) for cuts and mistakes.

Common Projects

• Flooring: Buy 5-10% extra for cutting waste.
• Painting: One gallon typically covers 350-400 sq ft.
• Drywall: Standard sheets are 4x8 (32 sq ft) or 4x12 (48 sq ft).