Baseball Slugging Percentage Calculator Other Calculators:SelectBatting AverageOn-Base PercentageSlugging PercentageOPSwOBABABIPIsolated PowerRuns CreatedSecondary AverageTotal BasesAB per HRFielding PercentageRF/GPRF/9ERAWHIPH9HR9SO9BB9SO/BB Ratio About Slugging percentage is used to measure the true power of a hitter. It calculates all of the total bases and divides that by the hitter’s at-bats. Calculation (Singles + 2 x Doubles + 3 x Triples + 4 x Home Runs) / At-Bats