The Biofuels Isoconversion (BIC) process converts freshly produced or used lipid based feedstocks, such as FOG into renewable fuels including diesel, jet, and naphtha. This process is unique because it produces fuels that are molecularly nearly identical to fuels produced from petroleum. The nearly identical chemistry results in jet and diesel fuels that are true ‘drop-in’ fuels which do not require blending with petroleum. Therefore, the BIC process can be applied as an insertable unit to existing hydrotreating units which enables co-processing, or built as a stand-alone unit for renewable fuel production.