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FSI Calculator

Calculate maximum buildable area and approximate achievable floors from plot area and FSI.

Formula v1.0.0IndiaMethodologyfsi-v1
How this is calculated
Max buildable area = Plot area × FSI; Floors ≈ buildable area ÷ (plot area × ground coverage %)

About this calculator

The FSI (Floor Space Index) calculator estimates the maximum total buildable area from a plot's area and its permitted FSI, and approximates how many floors that translates to given a chosen ground coverage percentage.

Worked example

3,000 sqft plot, FSI 2, 40% ground coverage

Result: Max buildable area = 6,000 sqft, ~5 floors

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