Square Footage Calculator
The square footage of a room or area from its length and width — with square yards and square meters.
- Square footage300.0
- Square yards33.33
- Square meters27.87
Inputs used
- Length20 ft
- Width15 ft
About this calculator
Square footage is length times width, both in feet: a 20 × 15 room is 300 square feet. For rooms that aren't simple rectangles, split the floor into rectangles, calculate each, and add them up — an L-shaped room is just two rectangles.
Flooring, paint and rental listings all speak in square feet, but suppliers sometimes quote in square yards (divide by 9) or square meters (multiply by 0.0929) — both conversions are shown below.
When ordering materials, buy more than the bare area: flooring typically needs 5–10% extra for cuts and waste, more for diagonal layouts or patterned tile. The tile calculator handles that waste factor for you.
Results are informational only — not financial, medical or legal advice.