Slugging Percentage Calculator
Find a hitter's slugging percentage (SLG).
Results update as you type.
How it works
Slugging percentage, or SLG, measures a baseball hitter's power by counting the bases they earn per at-bat, and this calculator computes it from their hits by type and at-bats. You enter the number of singles, doubles, triples, and home runs, along with total at-bats, and it returns the slugging percentage and the total bases. The key difference from batting average is that slugging weights hits by how many bases they produce: a single counts as one base, a double as two, a triple as three, and a home run as four. Summing these total bases and dividing by at-bats gives slugging, so a player who hits for extra bases will have a much higher slugging percentage than one who only singles, even with the same batting average. Because a home run is worth four bases, the theoretical maximum slugging is 4.000, achieved only by homering every at-bat. In practice, a slugging percentage around .400 is roughly average, .500 is very good, and above .600 is elite power hitting. Slugging is a core component of OPS, on-base plus slugging, one of the most popular modern batting metrics. Enter the hitter's singles, doubles, triples, home runs, and at-bats to compute slugging percentage.
SLG = total bases / at-bats
Slugging percentage divides total bases by at-bats. Total bases weight each hit by the bases it earns: one for a single, two for a double, three for a triple, and four for a home run. Unlike batting average, slugging rewards extra-base hits, measuring a hitter's power rather than just how often they reach base on a hit.
Source:Baseball statistics
We review all our tools from time to time to ensure accuracy.
Worked example
How to use this calculator
- 1
Enter your values
Enter singles, doubles, triples, home runs and at-bats.
- 2
Adjust the options
Fine-tune any options to match your situation.
- 3
Read your result
Slugging percentage updates instantly as you type — no button to press.
Frequently asked questions
What is slugging percentage?
Slugging percentage, or SLG, measures a hitter's power by dividing total bases by at-bats. Total bases weight hits by their value: one for a single up to four for a home run. Unlike batting average, which treats all hits equally, slugging rewards extra-base hits, capturing how much a batter advances with each at-bat.
How do you calculate slugging percentage?
Add up total bases by counting one for each single, two per double, three per triple, and four per home run, then divide by at-bats. For 39 total bases in 50 at-bats, the slugging percentage is .780. The calculator computes both the total bases and the slugging percentage from your inputs.
How is slugging different from batting average?
Batting average is hits divided by at-bats and treats every hit the same, while slugging percentage weights hits by the bases they produce. Two players can share a batting average but have very different slugging percentages if one hits for more power. Slugging therefore measures power, while average measures how often a batter gets a hit.
What is a good slugging percentage?
Roughly, a slugging percentage around .400 is average, .500 is very good, and above .600 marks elite power hitting. The theoretical maximum is 4.000, reached only by homering every at-bat. Standards vary by era and league offense levels, so compare a hitter's slugging to the league average for proper context.
What is OPS and how does slugging fit in?
OPS, on-base plus slugging, adds a hitter's on-base percentage to their slugging percentage into one number that balances getting on base with hitting for power. Slugging is one of its two components. OPS has become a popular quick measure of overall offensive value because it captures both dimensions of hitting in a single figure.