Quickly calculate the floor area, ceiling area, and total wall surface of any rectangular or L-shaped room.
📐 Room Area Calculator
Floor / Ceiling Area
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Total Wall Area
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Room Volume
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💡 Pro Tip
Always measure at floor level with a steel tape. Walls are rarely perfectly parallel in older homes — measure both ends of the room and use the larger dimension.
Frequently Asked Questions
Q: How do you calculate room square footage?
For rectangular rooms: multiply length × width. For L-shaped rooms, break the space into two rectangles, calculate each, then add them together.
Q: Why do I need room square footage?
Room area is essential for purchasing flooring, carpet, paint, tile, insulation, and HVAC sizing calculations.
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