On Base Percentage Calculator 16 July, 2024 | Baseball Calculators Hits ⓘ Number of hits ⚠️Please enter a valid value. Bases on Balls ⓘ Number of bases on balls (walks) ⚠️Please enter a valid value. Hits by Pitch ⓘ Number of times hit by a pitch ⚠️Please enter a valid value. At Bats ⓘ Number of at bats ⚠️Please enter a valid value. Sacrifice Flies ⓘ Number of sacrifice flies ⚠️Please enter a valid value. Calculate OBP Reset OBP: