Q&A for How to Square a Room

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How do you check if a room is square?

James Mansfield
Construction & Design Specialist
James Mansfield is a Construction and Design Specialist and the CEO of WestVillage General Contracting, a high-end and luxury design/build firm in New York City. James specializes in apartment, bathroom, and kitchen remodeling as well as fine cabinetry, lighting, paint, and wallpaper. James has developed a proprietary system of construction called the Luxury Build Method that hinges on a skilled team, respected partnerships, and clear, transparent communication. WestVillage GC has completed more than 500 commercial and residential projects in New York with designers such as David Scott Interiors and Fox Nahem, Kelly Behun. WestVillage GC is also a preferred contractor for Related buildings including Hudson Yards.

James Mansfield

Construction & Design Specialist

Expert Answer

First of all, the room is not square. It's never square. Start by making a cross in the enter of the room, then measure out from the center in each direction until you reach the walls. That way, if the room isn't square, you'll know where and in which direction—it might be square in one corner, for instance, or it might not be square in any corners.

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Question

How does this work if opposite walls are different lengths?

Community Answer

You have to treat it like a trapezoid. So think of it like a square plus a triangle. For example, a 15 ft wide room with wall lengths of 15 feet and 17 feet would be treated like a square + triangle. Square total = 15*15 = 225 square feet, triangle total = (17-15)*15*(1/2)= 15 square feet. Add them together and it would be 240 square feet total.

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Question

If the room is 15-by-15 feet, how many square feet is that?

Community Answer

Multiply the room dimensions (15 x 15) to get the square footage.

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Question

How do I measure a room to get square feet?

Community Answer

Multiply the dimensions of the room (length times width) to get the square footage.

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