Aim: A comparative study of effect of body mass index on blood pressure level in obese and non-obese individuals. Material & methods: The subjects were given an explanation of the goal of the research as well as the procedure. After receiving informed permission, body mass index and blood pressure measurements were measured. These parameters were systolic blood pressure, diastolic blood pressure, pulse pressure, and mean arterial blood pressure (MAP). Results: The mean value of both systolic and diastolic blood pressure was shown to be statistically substantially higher in patients who were overweight or obese compared to those whose weight was considered normal. Conclusion: As compared with patients who were not fat, those who were obese had higher mean values for the various blood pressure metrics. In this particular investigation, a number of different blood pressure indicators and body mass index were shown to have a substantial positive link with one another. The findings of this investigation led the researchers to the conclusion that participants who were fat had a greater chance of developing hypertension.