English edit

Etymology edit

square foot +‎ -age

Noun edit

square footage (usually uncountable, plural square footages)

  1. Area (the measure of an extent of surface), in square feet.
    • 1980, Robert M. Jones, editor, Walls and Ceilings, Time-Life Books, →ISBN, page 18:
      Next, to find how many boards you will need, calculate the square footage of each wall, ignoring all openings except the largest, such as archways or picture windows.
  2. (informal) Area (an extent of surface), especially of real estate.