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.

## 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)

## 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 much floor 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.

## FAQ

**What is a floor to area ratio?**

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.

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