Square Footage Calculator

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How to Calculate Square Footage

Square footage is the measurement of a room or building's area in square feet. The calculation method depends on the shape of the space:

  • Rectangle/Square: Length × Width
  • Triangle: (Base × Height) ÷ 2
  • Circle: π × Radius²
  • Custom Areas: Sum of individual areas

Common Uses for Square Footage Calculations

  • Real estate listings and property valuations
  • Flooring installation and material estimates
  • Paint coverage calculations
  • Room planning and furniture layout
  • Construction and renovation projects

Measurement Tips

  • Measure to the nearest inch for accuracy
  • Include closets and built-in features
  • Exclude outdoor spaces unless specified
  • Break irregular shapes into smaller regular shapes
  • Double-check all measurements