Enter the parcel width, parcel depth, floor area of one floor, and the total number of floors into the calculator to determine the floor to area ratio.
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Floor to Area Ratio Formula
The following formula is used to calculate the floor-to-area ratio.
FAR = G / B
- Where FAR is the floor to area ratio
- G is the gross floor area (sum of the area of all floors)
- B is the buildable land area (parcel width X parcel depth)
To calculate the floor to area ratio, divide the gross floor area by the buildable land area.
Floor to Area Ratio Definition
A floor to area ratio is defined as the ratio of the gross floor area to buildable land area and is a measure of how many floors can be built in a given parcel or lot of land.
Floor to Area Ratio Example
How to calculate a floor to area ratio?
- First, determine the gross floor area.
Sum all of the areas of each story in the potential building to determine the gross floor area.
- Next, determine the buildable land area.
Calculate the total possible land area that can be built on by multiplying the parcel width by the parcel depth.
- Finally, calculate the floor to area ratio.
Calculate the floor to area ratio using the equation above.
A floor to area ratio is a measure of the ratio of a building floor area to the size of the lot of the property.