Abstract: This study investigated the effect of input power and process time on microwave-metal interaction pyrolysis of pure plastics (PS, PP, LDPE) and their blends into liquid and gaseous fuels. The microwave power and time were varied to pyrolyze 20 g of each sample in an iron coil. The pure PS underwent maximum conversion into fuels followed by PP and LDPE. Under optimized microwave power (2100�2500 W), PS produced 88.7 oil after 19 min of reaction time, PP produced 54.65 oil at 23 min of reaction time and LDPE produced 30.15 oil after 26 min of reaction time. Pure PS and PP showed high conversion efficiency of 95.40 and 95.10, respectively, into liquid and gaseous fuels. Pure LDPE showed only 54.30 conversion into fuels by producing large quantity of waxy residue. In blended form, PS-PP blend revealed highest conversion of 65.67 into fuels followed by PS-PP-LDPE blend (57.23), PS-LDPE blend (46.52) and PP-LDPE blend (28.08). Based on mass balance and percentage conversion, PS-PP blend showed maximum conversion of 96.25 whereas PP-LDPE showed minimum conversion of 74.99. Higher microwave powers within optimal range produced better yield of liquid fuel in shorter time periods. The pyrolytic oils contained some useful aromatic and aliphatic hydrocarbons (C8�C16). Graphic Abstract: Figure not available: see fulltext. © 2020, Springer Nature B.V.