Square Footage Calculator
Find the total square footage of rectangular, circular, or triangular areas.
The square footage calculator handles rectangular, circular, and triangular areas so you can quickly size any space. Enter the dimensions for each shape and the tool returns the exact area in square feet. Accurate area measurements are the foundation for every material estimate downstream.
- Measure to the nearest half-inch — rounding up early compounds errors in material orders.
- For L-shaped rooms, break the space into two rectangles and add the results.
- Always re-measure a space before ordering materials; as-built dimensions often differ from plans.
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