Slugging Calculator
Measure hitting power with total bases per at-bat - the definitive power metric.
Performance Benchmarks
Understanding Slugging Percentage
Slugging Percentage (SLG) measures a batter's raw power. While Batting Average answers "how often do you get a hit?", Slugging answers "how much damage do those hits do?".
In modern baseball, teams value SLG highly because extra-base hits (doubles, triples, homers) are the most efficient way to score runs. A player who hits .250 with 30 homers is often more valuable than a player who hits .300 with only singles.
Babe Ruth's career .690 SLG is the all-time record. He essentially averaged nearly 3/4 of a base every time he stepped up to the plate.
Slugging is just "Total Bases per At-Bat". If you hit a homer (4 bases) in 4 at-bats, your SLG is 1.000.
To find a player's "true" power, subtract their Average from their Slugging (SLG - AVG). This stat is called Isolated Power (ISO).
Frequently Asked Questions
What is Slugging Percentage?
Slugging Percentage (SLG) measures a batter's raw power by calculating total bases per at-bat. Unlike batting average, which counts all hits equally, SLG weights extra-base hits more heavily: Singles=1, Doubles=2, Triples=3, Home Runs=4.
How is SLG calculated?
The formula is: SLG = (1B + 2×2B + 3×3B + 4×HR) ÷ At Bats. Alternatively, it is simply Total Bases divided by At Bats.
What is a good Slugging Percentage?
League average is typically around .400-.420. A SLG above .450 is excellent. Anything above .550 indicates elite power hitting ability.
Can SLG be higher than 1.000?
Yes! The theoretical maximum is 4.000 (hitting a home run every at-bat). While extremely rare over a full season, Barry Bonds holds the single-season record with .863 in 2001.
Why don't walks count in Slugging?
Slugging measures hitting power specifically. Walks do not involve hitting the ball and are not considered at-bats, so they are excluded from the calculation. For a stat that includes walks, use OBP or OPS.