Work out a hitter’s slugging percentage — the power-hitting counterpart to batting average, weighting extra-base hits more heavily than singles.
How it works
Slugging percentage is total bases divided by at-bats: SLG = Total Bases ÷ At-Bats, where a single counts as 1 base, a double as 2, a triple as 3, and a home run as 4. A hitter with 250 total bases in 500 at-bats slugs .500.
What this does not include
Slugging percentage treats every at-bat equally and ignores walks entirely — pairing it with on-base percentage (as in “OPS,” on-base plus slugging) gives a fuller picture, but that combined stat isn’t calculated here.
How to use this calculator
- Enter total bases (singles + 2×doubles + 3×triples + 4×home runs).
- Enter at-bats.
- Read off the slugging percentage.
A worked example
250 total bases over 500 at-bats: slugging percentage = 250 ÷ 500 = 0.500.
90 total bases over 180 at-bats: slugging percentage is also 0.500 — the same rate at a smaller sample size.
What the variables mean
| Variable | Meaning |
|---|---|
| Total bases | Singles count once, doubles twice, triples three times, home runs four times |
| At-bats | Official at-bats during the period |
Edge cases worth knowing
Slugging percentage weights extra-base hits more heavily than batting average does. A player who hits fewer singles but more home runs can have a lower batting average yet a higher slugging percentage.
Zero at-bats makes the percentage undefined — there’s no sample to calculate a rate from, so the calculator declines to show a result.
How is slugging percentage different from batting average?
Batting average counts every hit as worth the same 1 point; slugging percentage weights a home run four times as much as a single, rewarding power hitters more heavily.
Can slugging percentage exceed 1.000?
Yes — a hitter who homers in every at-bat would slug 4.000, since total bases can be up to four times at-bats.
What’s a good slugging percentage?
In modern professional baseball, .450 or higher is generally considered strong, and .500+ is elite power-hitting territory.
