Advanced Baseball Slugging & OPS Calculator
Analyze batting power dynamically. Calculate Batting Average (BA), On-Base Percentage (OBP), Slugging Percentage (SLG), and OPS with an interactive baseball diamond path visualizer.
Official At-Bat Records
Extra Base Hits Breakdown
Singles: 19 (dynamically derived)
Plate Appearance Extras (For OBP & OPS)
..500
Total Bases: 50 from 100 official ABs
Hit Path Visualizer
Understanding Baseball Batting Metrics
How is Slugging Percentage (SLG) calculated?
Unlike batting average, which counts all hits equally, slugging percentage weighs hits by the number of bases they earn: a single is worth 1, a double 2, a triple 3, and a home run 4. The sum of these bases (Total Bases) is divided by official At Bats. Walk and hit-by-pitch appearances do not count as official at-bats.
Why is On-Base Plus Slugging (OPS) so important?
OPS is the mathematical sum of On-Base Percentage (OBP) and Slugging Percentage (SLG). It has proven to be one of the most reliable indicators of a team's run scoring capabilities. A league average OPS is around .720, whereas an elite player (like Aaron Judge or Shohei Ohtani) can surpass .900 or 1.000 in a season.
What counts as an official At-Bat (AB)?
An At-Bat represents a plate appearance where the batter either strikes out, puts the ball in play, or reaches base on an error. Walks (BB), Hit by Pitch (HBP), Sacrifice Hits, and Sacrifice Flies (SF) are excluded from official At-Bats because they represent a batter's patience rather than power outcomes.
A Worked Example
Suppose a hitter has 500 at-bats with 100 singles, 25 doubles, 2 triples, and 20 home runs — 147 hits in all, a .294 batting average. Their total bases come to 100 + (25×2) + (2×3) + (20×4) = 236, so slugging percentage is 236 ÷ 500 = .472.
Pair that with an on-base percentage of roughly .350 and their OPS is about .822 — comfortably above the .720 league average and the mark of a productive everyday bat. Notice how the 20 home runs add 80 total bases on their own, which is why slugging rewards power far more than batting average does.
Frequently Asked Questions
What's a good slugging percentage?
A league-average SLG sits around .400; .500 is very good, and .550 or higher is elite power production. Context matters by era and ballpark, but anything over .500 marks a strong slugger.
What's the difference between batting average and slugging?
Batting average treats every hit equally (hits ÷ at-bats), while slugging rewards extra-base hits by counting total bases — so a player with many doubles and home runs has a much higher SLG than AVG.
What is OPS+?
OPS+ adjusts a player's OPS for league and ballpark and scales it so 100 is league average; 150 means 50% better than average. It lets you fairly compare hitters across different seasons and stadiums.