Room Area Calculator

Measure a room’s area quickly using length and width. For general square footage projects, visit our Square Footage Calculator. Results include conversions to square meters and acres.

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Square Footage Rectangle Area Roof Area

Room Length

Room Width

Length Unit

Room Area: —

Formula:
Area = Length × Width

Example:
14 ft × 12 ft = 168 ft².

Frequently Asked Questions

How do I measure a room for square footage?

Measure length and width in the same unit, then multiply.

What if my room is not a perfect rectangle?

Split the room into rectangles, calculate each, and add the areas.

Should I add extra for flooring?

Many projects add 5–15% for waste, cuts, and mistakes.