Converters
Square Footage Calculator
Calculate the square footage of any rectangular or L-shaped room for flooring, painting, and real estate.
Square Footage
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How It Works
Area = Length Γ Width (for a rectangle). For irregular shapes, break them into rectangles and add the areas together. 1 square foot = 144 square inches = 0.0929 square meters.
Example
A 20 Γ 15 ft living room = 300 sq ft. At $3.50/sq ft for flooring, material cost = $1,050.
Frequently Asked Questions
How do I measure an L-shaped room?
Divide it into two rectangles. Measure each separately and add the areas. For example, 20Γ15 + 10Γ8 = 300 + 80 = 380 sq ft.
How much flooring do I need?
Calculate your square footage, then add 10% for cuts and waste. Order this total from your supplier.
How is square footage calculated for a home listing?
Only finished, heated living space is typically counted. Garages, unfinished basements, and exterior spaces are excluded from the advertised square footage.