OPS Calculator
Calculate OPS (on-base plus slugging) — the sum of on-base percentage and slugging percentage.
In plain terms: this adds how often a hitter reaches base to how much power they hit for, in one number. The two halves sit on different scales, so it is a quick summary rather than a precise measure.
Informational only — not a substitute for official league statistics or professional judgment.
How it's calculated
Assumptions
- Total bases must be entered directly (singles×1 + doubles×2 + triples×3 + home runs×4) rather than broken into individual hit types.
- Uses the standard unweighted OPS formula (OBP + SLG) — not the park-and-league-adjusted OPS+.
Source: MLB Glossary — OPS
Last reviewed: July 2026
Frequently asked questions
What's considered a good OPS?
In modern MLB, an OPS above .900 is considered excellent (typically all-star-caliber offense), .800–.900 is above average, and league-average OPS usually sits in the low .700s, though it shifts year to year with league-wide offensive levels.
Why add on-base percentage and slugging percentage together?
OPS is a quick, back-of-the-envelope way to capture both halves of offensive value — how often a hitter reaches base (OBP) and how much damage they do when they hit the ball (SLG) — in a single number, without needing separate weighting like more advanced metrics (e.g. wOBA) use.
What counts as "total bases"?
Total bases = singles × 1 + doubles × 2 + triples × 3 + home runs × 4. It's a standard column in most box scores and stat lines, so you usually won't need to add up individual hit types by hand.
Is OPS a perfect stat?
No — a well-known limitation is that OPS weighs OBP and SLG equally by simply adding them, even though on-base ability is generally considered slightly more valuable per point than slugging. More advanced metrics like wOBA and OPS+ correct for this and adjust for park/league context, but OPS remains a widely used, easy-to-calculate approximation.
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