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. Copy or print results without an account. Measurements remain in the current tab and are lost on refresh. Recheck actual dimensions and follow flooring product instructions before ordering. This tool provides planning estimates, not certified property measurements or carpet roll-cut optimization.
Square Footage Calculator
Measure rooms and plan whole-box flooring purchases
Square Footage Calculator Introduction
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PricingFree
Platforms
Web
ListedSep 17, 2026
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