Sports Analytics & Fitness

Baseball OPS Calculator

Calculate OPS (On-Base Plus Slugging) to gain a comprehensive metric of a hitter's overall offensive production and power.

OPS
.800

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The Ultimate Offensive Metric

For decades, baseball front offices argued over what was more important: getting on base safely (OBP), or hitting for massive power (SLG).

In 1984, writer Pete Palmer popularized a metric that ended the debate by simply acknowledging that both are critically important. On-Base Plus Slugging (OPS) is now universally recognized as the single best, easily calculable metric for evaluating a hitter's overall offensive production.

Combining the Best of Both Worlds

OPS elegantly combines a player's plate discipline (their ability to take walks and avoid outs) with their raw destructive power.

The Formula

The calculation is quite literally just addition.

OPS = On-Base Percentage (OBP) + Slugging Percentage (SLG)

Where:
OBP=
How often the batter reaches base safely
SLG=
How many total bases the batter averages per at-bat

Evaluating the OPS Scale

Because it combines two different percentages, the scale for OPS is much higher than traditional batting stats.

  • .700 to .750: League average.
  • .800: An All-Star level player.
  • .900: An elite MVP candidate.
  • 1.000+: A legendary, historic season. (Aaron Judge famously posted a 1.111 OPS during his 62-home run season in 2022).

Frequently Asked Questions

Yes. From a strict statistical standpoint, adding two fractions with completely different denominators (OBP uses Plate Appearances, SLG uses At Bats) is mathematically invalid. However, the resulting number correlates so perfectly to actual runs scored that the baseball industry accepts the flawed math.

OPS+ (OPS Plus) is an advanced metric that normalizes a player's OPS across the entire league, adjusting for the specific ballpark they play in. A score of 100 is exactly league average. A score of 150 means the player is 50% better than the average hitter.

Babe Ruth holds the all-time career record with an OPS of 1.163, followed closely by Ted Williams at 1.115.

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