About the Square Footage Calculator
Enter length and width to get area in square feet, yards, and metres. Multiply for several identical areas, and add a price per square foot to estimate material cost — the starting point for most material calculations.
How it’s calculated
Area = length × width. Square yards = sq ft ÷ 9; square metres = sq ft × 0.0929.
Example calculation
A 12 × 10 ft room is 120 square feet (about 11.1 square metres).
Frequently asked questions
How do I handle an L-shaped room?
Split it into rectangles, calculate each area, and add them together. The same works for any irregular shape made of straight sides.
How is this used for materials?
Most flooring, tile, paint, and landscaping is priced and bought by area, so square footage is the first number you need — then divide by the product's coverage.
This is a general material estimate for planning only. Actual quantities vary with waste, offcuts, site conditions, product coverage, and technique. Confirm measurements and coverage rates before ordering, follow local building codes, and round up — running short mid-project is costly.