Go here for latest concordance tables for SAT and ACT. https://www.act.org/content/dam/act/unsecured/documents/ACT-SAT-Concordance-Tables.pdf Your scores are close enough to just submit both; the college will use the one it believes is better for you. Note, as the tables indicates, comparisons do not depend just on composites, and you will see in the tables comparisons done for math and for SAT r/w and ACT English/reading. The reason for that is that composite may not be the only evaluation a college does for determining higher score, e.g., a college may consider math to be the most important score for science or engineering majors,.