calcs.homes
calcs.homes
Enter your room, lot, or slab dimensions and we'll work out the square footage — a rectangle sq ft calculator, circle area calculator, and triangle area calculator in one.
Estimate only — measure twice before ordering materials.
For a rectangle, multiply length by width. For a circle, use area = π × (diameter ÷ 2)². For a triangle, multiply the base by the height and divide by two. This square footage calculator does the math for you — just pick a shape and enter your measurements in feet (or meters).
Measure the length and width of the room in feet, then multiply them together. For an L-shaped room, split it into two rectangles, calculate each separately, and add the results.
Measure the diameter (the distance straight across the widest point), select "Circle" above, and enter it — we handle the πr² formula for you.
Yes — switch the toggle at the top of the page to "EU · m / cm" and enter your measurements in meters to get square meters.
One acre is 43,560 square feet. The result panel above shows acres automatically once you've entered your dimensions.