A human body mass index measurement system has been developed by using IR sharp distance infrared cencorG P2Y0A02YK0F,200 kg Load Cell, Arduino Uno,Raspberry PI 3,HX711, HDMI display and the other electronic components. In this research Arduino Uno has a purpose as the instruction center with AT Mega 328 microcontroller is used to prosess high measurement data and body mass obtained from cencor Sharp IR GP2Y0A02YK0F dan Load Cell. This measurement system is controlled by the Arduino programming language. After Arduino Uno get a high data and body mass, the data is sent to raspberry pi 3 to calculate body mass index value ( BMI ) and the body category determination using lazarus programming language. If the BMI value < 17,0 classified as “very thin” body category, the BMI value between 17,0 – 18,4 has the category of “ thin body “, the value of intermediate BMI 18,5 – 25,0 has the “ normal body “ category, BMI value between 25,1 – 27,0 has a “ fat body “ category, and a BMI value >27,0 has a “ very fat body “ category. Raspberry pi 3 is also aquipped with HDMI support, hence all high data mass, BMI and body category will be displayed on HDMI monitor as its output. Keyword :BMI, IR GP2Y0A02YK0F ,Load Cell, Arduino, Raspberry, HX711, HDMI.