Square Footage Calculator

Square Footage Calculator is a free browser tool for DIY room measurement and flooring purchase planning. Enter feet and inches or metric dimensions, calculate rectangles, L-shaped rooms, circles and triangles, add or subtract rectangular sections, and combine up to 20 rooms. The flooring calculator separates net area, waste allowance, whole-box rounding, spare boxes and optional costs. Results can be copied or printed without an account. Measurements remain in the current browser tab and are lost on refresh; use them as planning estimates and follow product instructions before ordering.