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● Area & Project Planning Tool
Square Footage Calculator
Calculate square footage for common shapes, multiply by quantity, convert results to other area units, and optionally estimate project cost from a price per unit area.
01
Rectangle
Calculate floors, walls, rooms, lots and other rectangular surfaces.
02
Rectangle Border
Calculate only the border area around the inside of a rectangular surface.
03
Circle
Calculate circular surface area from its diameter.
04
Ring
Calculate a circular border using outer diameter and border width.
05
Triangle with Edge Lengths
Calculate triangle area when all three edge lengths are known.
06
Triangle with Base & Height
Calculate triangle area from its base and perpendicular height.
07
Trapezoid
Calculate area from two parallel bases and perpendicular height.
08
Sector
Calculate the area of a circular sector from radius and central angle.
09
Parallelogram
Calculate area from base length and perpendicular height.