Batting Average Calculator

1. Batting Average: enter the player's hits and at-bats. At-bats do not include walks, hit-by-pitches, or sacrifice flies. The calculator shows BA instantly.
2. On-Base Percentage (OBP): fill in walks (BB), hit-by-pitches (HBP), and sacrifice flies (SF) to calculate OBP. OBP is considered a better measure than BA because it includes all ways a batter can reach base.
3. Slugging Percentage (SLG): break down your hits into singles, doubles, triples, and home runs. The calculator weights each by its base value. Singles = 1, doubles = 2, triples = 3, home runs = 4.
4. OPS is calculated automatically as OBP + SLG. It is the most widely used single-number summary of a batter's offensive value in modern baseball analytics.

Example: a player with 75 hits in 275 at-bats has a .272 batting average, 30 walks, 3 HBP, 2 sac flies, and a mix of extra-base hits might have an OBP of .365 and SLG of .418, for an OPS of .783, which is above the MLB average.

Batting Average (BA):
  BA = Hits / At-Bats
  Example: 80 H / 290 AB = .276

On-Base Percentage (OBP):
  OBP = (H + BB + HBP) / (AB + BB + HBP + SF)
  Example: (80 + 35 + 4) / (290 + 35 + 4 + 3) = .352

Slugging Percentage (SLG):
  Total Bases = (1B × 1) + (2B × 2) + (3B × 3) + (HR × 4)
  SLG = Total Bases / At-Bats
  Example: (50 + 30 + 9 + 28) / 290 = .403

OPS (On-base Plus Slugging):
  OPS = OBP + SLG
  Example: .352 + .403 = .755

Why BA alone is not enough: batting average treats all hits as equal. A single counts the same as a home run. Two players can both hit .280 but one might be a power hitter with many extra-base hits and walks, while the other rarely walks or hits for power. OPS captures this difference, which is why front offices and analysts rely on it more than batting average alone.