Calculate surface area in ft² or volume in yd³ and estimate material cost.
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Results update automatically as you type.
Surface Area calculates 2D areas such as walls, floors, ceilings, panels, patios, and stone paths.
Estimates only. Verify before purchasing.
About the Construction Calculator
The Construction Calculator calculates rectangular surface area in square feet or rectangular volume in cubic yards. Choose the calculation mode, enter the dimensions for each surface or volume, and use optional material cost or waste settings when they apply.
This tool is intended for preliminary project estimates such as flooring, drywall, concrete, landscaping, or other materials measured by area or volume. Real projects may require extra material for cuts, breakage, grading, compaction, thickness variation, or supplier packaging.
Construction example
For example, a 10-foot by 12-foot rectangular surface has an area of 120 square feet before openings, waste, or other project adjustments are applied.