Floor Area Ratio (FAR) is a measure used in urban planning and zoning to determine the total allowable building area based on the plot size. It's calculated by dividing the total building area by the total plot area.

FAR is crucial in urban planning as it helps regulate the density of buildings in a particular area. It ensures that developments are in line with the infrastructure and amenities available, preventing overdevelopment and ensuring adequate open spaces.

FAR is calculated by dividing the total building area (in square meters or square feet) by the total plot area. For example, if you have a building area of 500 sq.m on a plot of 1000 sq.m, the FAR would be 0.5.

Yes, FAR values can vary based on local zoning laws, urban planning policies, and the specific needs and characteristics of a city or region. It's essential to consult local regulations when considering building or development projects.

FAR regulations can be influenced by various factors, including the need to preserve open spaces, manage traffic congestion, ensure adequate infrastructure, protect environmental or historical sites, and maintain the character of a neighborhood or city.