Total square footage across one or more rectangular rooms — add a room per length × width.
Yes — use "+ Add room" to add as many length × width rows as you need. Each row's area is shown next to it, and the total adds every room together.
Split it into rectangular sections (e.g. an L-shaped room becomes two rectangles) and enter each as its own row — the calculator only multiplies length × width per row, so irregular shapes need to be broken down first.
Alongside the total in square feet, the result card converts to square meters (× 0.09290304), square yards (÷ 9), and acres (÷ 43,560) automatically.