Floor space index


This online calculator is designed to calculate the ratio of the total floor area of buildings on a certain location to the size of the land of that location or the limit imposed on such a ratio.

Calculator

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Formula

FSI = CA / LA

  • FSI – floor space index
  • CA – total constructed area
  • LA – total land area

Note. This statistical floor space index calculator is provided for your personal use and should be used as a guide only. Construction and other decisions should NOT be based on the results of this calculator. Although this calculator has been tested, we cannot guarantee the accuracy of its calculations or results.

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