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Slugging Percentage Calculator.

Calculate baseball slugging percentage from singles, doubles, triples, home runs, and at-bats.

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Set your values

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Total bases: 47

Total bases

0.000000
Total hits: 30

Total hits

0.000000
At-bats: 100

At-bats

0.000000
Slugging percentage: 0.47

Slugging percentage

0.000000
Slugging percentage (%): 47

Slugging percentage (%)

0.000000

Results update automatically as you type.

Use Cases

Track player power stats

Use this calculator to compute a player's slugging percentage from their hit breakdown, helping evaluate power contribution beyond batting average.

Example: A player with 40 singles, 15 doubles, 3 triples, and 10 home runs in 250 at-bats has a SLG of .476.

Compare hitters for fantasy or scouting

Quickly compare slugging percentages of different players using their basic hit counts, useful for fantasy baseball or amateur scouting.

Example: Compare two players: one with more extra-base hits will have a higher SLG even if batting averages are similar.

Frequently Asked Questions

What is slugging percentage in baseball?
Slugging percentage (SLG) measures a batter's power by calculating total bases per at-bat. It's not a percentage but an average, with 1.000 being a perfect score. It weights hits: single=1, double=2, triple=3, home run=4.
How do I calculate slugging percentage?
Add total bases: (Singles × 1) + (Doubles × 2) + (Triples × 3) + (Home runs × 4). Then divide by at-bats. For example, 50 singles, 10 doubles, 2 triples, 5 home runs in 200 at-bats = (50+20+6+20)/200 = 96/200 = .480.
What is a good slugging percentage?
In MLB, average slugging is around .400. Above .450 is considered good, .500+ is excellent, and .600+ is elite. However, context like era and ballpark matters.

Tips & Common Mistakes

Tips

  • Ensure at-bats include all official at-bats, excluding walks, hit-by-pitch, sacrifices, and interference.
  • Double-check your hit counts: singles, doubles, triples, and home runs should sum to total hits, but the calculator uses them separately.
  • Slugging percentage is a rate stat, so compare players with similar at-bat totals for fair evaluation.
  • Use this as a reference for historical or current stats, but remember it doesn't account for walks or other on-base contributions.

Common Mistakes to Avoid

  • Including walks or hit-by-pitch in at-bats, which lowers the slugging percentage incorrectly.
  • Forgetting to multiply doubles, triples, and home runs by their base values, treating all hits as singles.
  • Using plate appearances instead of at-bats, which includes non-at-bat events and skews the result.

Last updated: August 13, 2026