Objective: Several published formula Sexist forth e determination of estimated fetal weight (EFW), with limited data on their comparative accuracies. The aims of our study were to assess and compare the performance of different EFW formulas in predicting actual birth weight (BW) in subset of Indian population. Methods: Live-birth singleton pregnancy with an EFW determined ultra sono graphically within 7 days of delivery and birth weight >500 g, gestational age >28 weeks were included in the study. Six well known Hadlock’s published formulas were used to calculate EFWs. The accuracy of the EFWs obtained from the different formulas were compared by mean percentage error methods. Results: Hundered fetuses were included in the study. Formula IV of Hadlock et al had the best performance with least mean percentage error and good cornbach alpha correlation. Conclusions: Six formulae show ed considerable variations. The choice of the appropriate formula for EFW in a given population should be based on objective and explicit criteria.