Square Footage Calculator
Calculate square feet, square yards, waste allowance, quantity totals, and optional cost from rectangular length and width.
Enter the rectangular length.
Enter the rectangular width.
Choose the unit used for length and width.
Optional number of identical rooms, sections, or rectangles.
Optional extra percentage for cuts, layout, or ordering margin.
Optional price for a rough cost estimate.
Status: initial
Results
Awaiting calculation
Introduction
The Square Footage Calculator estimates rectangular area for rooms, flooring, walls, lots, landscaping, and project planning from length and width.
For a rectangular area, square footage equals length in feet multiplied by width in feet. If dimensions use another unit, the calculator converts them to feet first.
Formula and method guide
Square feet
Square Feet = Length(ft) x Width(ft)
This is the standard rectangular area formula.
Area with waste
Area with Waste = Square Feet x (1 + Waste % / 100)
This is useful for flooring, tile, landscaping, and similar projects.
Square yards
Square Yards = Square Feet / 9
This conversion is useful when materials are priced or sold by square yard.
Variables
The longer or front-to-back side of the rectangle.
The side-to-side measurement of the rectangle.
The measurement unit used for length and width.
The number of identical rooms, sections, or rectangles.
Optional extra area for cutting, layout, and ordering margin.