Floor area ratio (FAR) means:
1). \(\begin{array}{*{20}{c}}
{\underline {(Total\;floor\;area\;of\;all\;floors - \;Area\;of\;ground\;floor} )}\\
{Area\;of\;plot}
\end{array}\)
2). \(\begin{array}{*{20}{c}}
{\underline {(Total\;floor\;area\;of\;all\;floors - \;Area\;of\;ground\;floor} )}\\
{Area\;of\;plinth}
\end{array}\)
3). \(\frac{{Total\;floor\;area\;of\;all\;floors}}{{Area\;of\;plot}} \times 100\)
4). \(\frac{{Total\;floor\;area\;of\;all\;floors}}{{Area\;of\;plinth}}\)
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.
As a formula, Floor area ratio, $(FAR = \frac{{\left( {gross\;floor\;area} \right)}}{{area\;of\;the\;plot}} \times 100\;)$