This paper studies the reliability of the calculated shear-wave velocity (V S ) from different available V S and SPT-N correlations in terms of seismic site response analysis. In the present study, various V S -N correlations developed for different regions around the globe have been used to calculate the bound of V S variations with depth at three different sites in Kolkata city. This bound has later been used to generate the random V S profiles using the Monte Carlo simulation. Equivalent

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... ar site response analysis has been performed to study the response of those generated profiles under different input motion excitations. Strong-to-weak ground motion records have been used for this purpose. The amplification spectra of the generated V S profiles using all soil types and specific soil-type V S -N correlations show significant variations. The study also shows that the V S -N correlation may result in quite different V S,30 values and subsequently it may lead to the different site classes according to the NEHRP 2003 classification. So, the random choice of the V S -N correlation, where the direct measurement of V S is not available, may affect the outcome of seismic hazard analysis significantly. The study points out the need for accurate estimation of the V S profile either from in-situ determination or using site-specific correlation.