Accurate ranking of fluid catalytic cracking (FCC) feeds will help oil producers price their commodities. The value of an FCC feed depends on its properties, which, in turn, contribute toward producing high-value products with good qualities. Feed ranking based on general analyses is the simplest way to determine the best feeds but can be misleading for some. In this study, the authors propose a feed grading method with consideration of only concentrations of gasoline precursors, total nitrogen, and microcarbon residue (MCR), assuming that gasoline is the most desirable product. By assigning the merit and discount values of the three elements, the relative gasoline yield of a feed can be calculated and its apparent feed rank established. The method was tested on 10 feeds that were catalytically cracked in both a microactivity test (MAT) unit and a riser pilot plant. With some exceptions, the apparent feed ranks indicated an agreeable order with those based on individual high- and low-value MAT product yields at both constant test severity (catalyst/oil (C/O) ratio of 7) and conversion (65 wt %). The apparent feed ranks were also validated with the exact feed ranks determined by comparing the individual MAT yields at an achievably high conversion, using the maximum gasoline yields as a guide. The two feed ranks also showed good conformity, with respect to the sequence. Verification of apparent feed ranks against riser pilot plant yields in this study was difficult, because of limited test data for comparison. MAT yields of the 10 feeds compared better with riser pilot plant yields at the same conversion than with yields at the same C/O ratio. Among the six cracked products, dry gas gave the best comparison, in terms of absolute yields, whereas coke showed the worst results.