Floor area ratio (FAR) is the ratio of a building’s total floor area (gross floor area) to the size of the piece of land upon which it is built. The terms can also refer to limits imposed on such a ratio through zoning.
The floor area ratio (FAR) is the relationship between the total amount of usable floor area that a building has, or has been permitted for the building, and the total area of the lot on which the building stands. This ratio is determined by dividing the total, or gross, floor area of the building by the gross area of the lot.
How to calculate Floor Area Ratio (FAR)?
Formula for calculating FAR is quite simple. “Total covered area of all floors divided by the plot area.”
Floor area ratio = (total covered area on all floors of all buildings on a certain plot, Gross Floor Area) / (area of the plot).