Plastic bag waste in Indonesia is so alarming. The many uses of plastic bags and those made from plastic in the food sector, industry, and others that will have a negative impact on the environment if there is no utilization of the plastic bag waste. This final project is written as a research report that utilizes plastic bag waste to be converted into fuel oil by pyrolysis process. Starting from the manufacture of pyrolysis devices, the process of pyrolysis for extracting fuel oil, and laboratory testing of oil density, oil viscosity, and oil calorific value. Pyrolysis was carried out three times with varying temperatures at 200 ° C, 250 ° C, and 300 ° C. This study concludes that the best LDPE type plastic bag waste pyrolysis oil in this study is at a temperature of 250 ° C with a viscosity of 1.95 cP, a calorific value of 10826,388 cal / gr, and an oil density of 0 , 7044 gr / ml. Oil from the pyrolysis of plastic bag waste can be ignited through sparks and can be used as an alternative energy source