Context: Time since death (TSD) is very important opinion in every post mortem examination. In every case, lawyers will try to exclude the evidences as they are not within range of time since death. Aims: To evaluate time since death from decrease in body weight, organs weight, BMI (Body Mass Index) and BSA(Body Surface Area) in percentage. Methods and Materials:This isprospective study comprised of 300 cases randomly selected from cadavers brought for autopsy atmortuary of Government Hospital, Rajkot from Jan­2012 to May­2013. Based on time since death, cases are classified as fresh cases having TSD within 6hours, 1­3 days, 3­5 and more than 5 days respectively. Change in body weight, organs weight, BMI and BSAwere studied in these TSD range. Conclusion:Changes in body weight, organ weight, BMI and BSA can be used as on table rapid tool to evaluate TSD. 

Keywords: TSD(Time Since Death); Organs Weight; Decomposition; BMI (Body Mass Index); BSA (Body Surface Area)