This is a observational, analytical study conducted in urban private schools of Bengaluru in North and South Zone. The children between the age group of 6 years to 15 years were the subjects of the study. It involved recording of anthropometric parameters like weight, height, waist circumference, chest circumference and head circumference. The BMI is calculated from the measures of weight and height, and the TMI by the ratio of weight in kilograms to height in meters at the third power (TMI =W/H3). The risk classification of central fat accumulation is based on the ratio of waist circumference to height. Statistical analysis was done.Among the 979 children studied in our study,511(52%) were boys and 467(48%) were girls. The weight ranged from 15 kgs to 108.4 kgs with mean weight being 42.4 kg. BMI and TMI were found to be higher in adolescent age groups (11 to 15 years). The present study shows high correlation between BMI and TMI (p<0.001), in the analysis of its accuracy, through the ROC curves, the TMI shows a higher capacity (AUC-0.911). Thus, TMI is a better indicator of possible future risk of cardio-metabolic disease. TMI is a better tool, superior to BMI, and can early identify children with risk of cardiovascular and metabolic syndrome in a primary health care setting.