Batting Average Calculator
The famous statistic and the least useful one.
Work out Batting Average. The famous statistic and the least useful one. States the assumption instead of hiding it.
OPS
.899
.300 average · .377 on-base · .522 slugging
Batting average is the famous statistic and the least useful of these. It treats a walk as nothing at all and a home run exactly the same as a single, which is why on-base percentage and slugging replaced it as the headline measures. On-base percentage counts walks and hit-by-pitches, because reaching base is what matters regardless of how. Slugging weights hits by bases, so a home run counts four times a single. Their sum, OPS, is a crude but effective single number. Isolated power — slugging minus average — strips out singles and isolates extra-base ability. A player hitting .300 with an ISO of .100 and one hitting .250 with an ISO of .250 are completely different hitters that batting average would rank the wrong way round.
How the Batting Average Calculator works
Batting average, on-base percentage, slugging, OPS and isolated power from one set of inputs. Average treats a walk as nothing and a home run as a single, which is exactly why the other four exist.
Also known as: how to calculate ops · slugging percentage formula · on base percentage calculator · baseball hitting stats
Frequently asked questions
How is batting average calculated?
Hits divided by at bats. Walks, hit-by-pitches and sacrifices are excluded from at bats entirely, which is a large part of why the statistic misleads.
What is OPS?
On-base percentage plus slugging percentage. It is dimensionally incoherent — the two have different denominators — and it still predicts run production far better than average does.
How is on-base percentage different?
It counts walks and hit-by-pitches as successes and includes sacrifice flies in the denominator, because reaching base matters regardless of how you got there.
What is isolated power?
Slugging minus batting average, which strips out singles and isolates extra-base ability. It separates two hitters with identical averages and completely different value.
What counts as a good OPS?
Broadly, .900 and above is excellent, .800 to .900 is very good, around .700 is roughly league average and under .650 is poor. Era and ballpark shift all of those.
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