Square Footage Calculator

Add up the area of rooms or spaces in square feet or square metres.

Runs in your browser — nothing is uploaded
Units
Areas (rooms, sections)

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Material estimates only — add waste, confirm quantities with your supplier and follow local building codes. Not an engineering guarantee.

How to use Square Footage Calculator

  1. Enter your values — the unit for each field is shown next to it.
  2. The result updates instantly as you type.
  3. Copy the results, or change inputs to compare scenarios.

Formula & assumptions

Area = length × width (for each rectangle), then add them up