General
Square Footage
Area calculator for rectangles, circles, triangles, and trapezoids.
Estimator only. TradeToolz.com calculators provide estimates based on your inputs and selected settings. Results are not final answers, professional advice, code-compliance determinations, safety determinations, bids, quotes, purchase instructions, or installation instructions. Verify before use.
Formula: Rect: L×W | Circle: π×r² | Triangle: 0.5×b×h | Trapezoid: 0.5×(a+b)×h