Compare hitters fairly by accounting for park environments and league-wide offense.
This Adjusted OPS Plus Calculator lets you enter a player’s on-base plus slugging, league average OPS, and the park factor to see how the hitter truly stacks up.
By normalizing for outside influences, the tool produces an index where 100 is league average.
Values above 100 indicate stronger production, while numbers below 100 reveal below-average output.
Adjusted OPS Plus Calculator
Adjusted OPS+ Calculator FAQ
What is OPS+?
OPS+ is an index that scales on-base plus slugging to league and park conditions, setting 100 as league average.
Why should I adjust for park factor?
Ballparks play differently; some boost offense while others stifle it.
Adjusting for park factor keeps comparisons fair across venues.
What park factor number should I enter?
Use the season park factor published by trusted outlets such as Baseball Reference.
A neutral field is 100, hitter friendly is above 100.
Does an OPS+ of 120 mean a player is 20 percent better?
Yes.
OPS+ is a percentage index above or below league average.
A 120 mark indicates the hitter performed 20 percent better than average.
Can pitchers have an OPS+ value?
Pitcher batting lines can be measured, but analysts normally use OPS+ for hitters.
Pitchers are usually evaluated with separate metrics.