Square footage calculator
Square footage is the area of a floor, counted in square feet. To find it, multiply length by width. For an L-shaped room, split it into rectangles, find each area, and add them.
Square footage
Tap or type into the yellow figures on the drawing to change them.
The formula for any rectangle is simply length times width. If the room is L-shaped or has a bump-out, divide it into two or more rectangles. Measure each rectangle's length and width separately, multiply to get each area, then add those areas together. The square footage calculator on this page handles both feet and meters. A toggle on the page switches between them. The calculation is the same either way.
This square footage calculator uses a single URL with a toggle that switches between feet and meters, so you can measure in imperial or metric.
My room is L-shaped. How do I calculate its square footage?
Split the room into two or more rectangles. Measure each rectangle's length and width, multiply those together to get each area, then add all the areas. That total is the room's square footage.
What unit are flooring, tile, and paint sold in?
They are sold by area, so you will order in the square unit used where you live. The calculator's feet/meters toggle matches whatever your tape measure shows.
When buying material, is rounding up the final total a good idea?
Because flooring, tile, and paint are sold by area, you will want a little extra for cuts, mistakes, and future repairs. Rounding up makes your shopping list safer.