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Square footage calculator
Calculate the area of a rectangle, circle, or triangle in feet and turn it into a material cost.
Calculate square footage.
Measure a rectangle, circle, or triangle in feet and turn the area into a material or flooring cost when you have a price.
COMMON WAYS TO ASK
- How do I calculate square footage?
- Square feet of a room
- Flooring cost by area
QUICK ANSWER
What this calculator tells you.
Choose a shape, enter its measurements in feet, and read the area in square feet. Add a price per square foot to turn the area into a quick material-cost estimate.
A 12 × 15 ft room with flooring at $3.50
INPUTRectangle · 12 ft × 15 ft · $3.50 per sq ft
RESULT180 sq ft · $630 in flooring
Questions people ask next.
How do I measure an L-shaped room?
Split it into two rectangles at the inside corner, calculate each area, and add them. Complex floor plans are always sums of simple shapes.
Should I add extra material beyond the area?
Usually yes. Cuts, pattern matching, and mistakes consume material, so flooring and tile orders commonly add around 5 to 10 percent waste. The room finish estimator handles that explicitly.