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When you say "square footage", that usually means the area of the floor, and yes, you get that by multiplying (length of the room) x (width of the room). That tells you how much carpet you need for the floor.

The walls and the ceiling also have their own "square footage". You have to know that to do things like paint and wallpaper. The ceiling has the same area as the floor. But for the walls, you have to do another whole different calculation.

The easy formula for square footage of the walls is circumference (the distance around the room at the floor level) X the height of the wall (at the tallest point if the walls are uneven or have a peak). If the walls have a large number of windows, doors or other areas not to be painted, you may want to figure the rough square footage of these (estimate low, better to have a bit too much paint than a bit too little) and subtract that from your total.

If you are estimating square footage for paint remember you may want to do two coats. If you are estimating for wallpaper, be sure to allow for the "pattern repeat".

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12y ago
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Q: When finding the square footage of a room Is it true that all you have to do is length X width?
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