OPS Calculator
OPS adds on base percentage to slugging to capture both getting on base and hitting for power. Enter the two figures.
Calculate ops
Fill in the fields and select Calculate.
What you'll need
To use the ops calculator, have these figures ready:
- On base percentage — for example, 0.390.
- Slugging percentage — for example, 0.520.
The calculator then returns the ops the moment you press calculate.
How it works
OPS = on base percentage + slugging percentage
You enter the on base percentage and slugging percentage, and the calculator returns the ops using the formula above.
When to Use
Use the OPS calculator to get a quick, comprehensive measure of a hitter's offensive production. OPS (On-base Plus Slugging) combines the ability to get on base with power hitting, making it one of the most useful single-number hitting metrics. It is used by scouts, coaches, and analysts to evaluate and compare hitters across the league.
What the result tells you
OPS folds getting on base and hitting for power into one number, which is why it has become a popular shorthand for a hitter's value. Around .800 is good, .900 excellent and 1.000 elite. It slightly undervalues on base percentage relative to slugging, but it is close enough to be a fast, reliable read of overall offence.
Benchmarks & Interpretation
Here is how typical results are categorized and interpreted:
| Value / Range | Rating | Description |
|---|---|---|
| Below .650 | Poor | A struggling hitter. Well below league average. |
| .650 – .720 | Below average | Room for improvement in either getting on base or hitting for power. |
| .720 – .800 | Average | A solid hitter at the major league level. |
| .800 – .900 | Good | An above-average hitter with a well-rounded offensive game. |
| .900+ | Elite | Outstanding offensive production. All-Star caliber. |
Pro Tips & Advice
OPS can be improved by working on both its components. To increase OBP, develop plate discipline and the ability to draw walks. To increase SLG, work on driving the ball for extra bases through better bat speed and launch angle. The best OPS hitters combine patience (taking walks) with aggression (driving hittable pitches). If your OPS is lopsided — high OBP but low SLG, or vice versa — focus on the weaker component.
Step by step
- Enter the on base percentage.
- Enter the slugging percentage.
- Select Calculate to read the ops.
Worked example
A hitter with a .390 on base percentage and a .520 slugging has an OPS of .910, an excellent season.
Frequently asked questions
How is the ops worked out?
OPS = on base percentage + slugging percentage. OPS adds on base percentage to slugging to capture both getting on base and hitting for power. Enter the two figures.
What OPS is considered great?
An OPS around .800 is good, .900 is excellent and 1.000 or above marks an elite, MVP level season.
Is OPS a perfect metric?
OPS is useful but not perfect. It weights OBP and SLG equally, but research shows that OBP is about 1.7 times more valuable than SLG for run scoring. Metrics like wOBA and wRC+ correct for this weighting issue.
What is the highest career OPS in MLB history?
Babe Ruth holds the career OPS record at 1.164. His combination of elite on-base ability and unmatched power made him the most productive hitter in baseball history by this measure.
How accurate is the OPS Calculator?
The tool applies the standard formula exactly, so the result is only as accurate as the figures you enter. Double check your inputs, since a wrong number going in gives a wrong number coming out.
Is the OPS Calculator free to use?
Yes. Every tool on GamersZone is free, with no account and no limit on how many times you calculate. The maths runs in your browser, so the numbers you enter are never sent to a server or stored.
How we calculate this
This tool applies the standard formula shown above. The calculation runs entirely in your browser, so the figures you enter are never stored.