Slugging Percentage Calculator
Use this free slugging percentage calculator to measure a hitter’s power. Enter your singles, doubles, triples, home runs, and at-bats, and it returns total bases per at-bat as a three-decimal number like .500.
Slugging Percentage Calculator: Quick Facts
- Formula: total bases divided by at-bats.
- Total bases: 1B + 2x2B + 3x3B + 4xHR.
- Output: a .XXX figure.
- Measures: power, not just contact.
- Free: no sign-up.

How Slugging Percentage Works
Slugging percentage weights hits by how many bases they are worth. A single is 1 base, a double 2, a triple 3, and a home run 4. Add up total bases and divide by at-bats. Unlike batting average, slugging rewards extra-base hits, so it is a measure of power.
Frequently Asked Questions
How do you calculate slugging percentage?
Add total bases (singles plus 2 times doubles plus 3 times triples plus 4 times home runs) and divide by at-bats. The result is shown to three decimals.
What is the difference between batting average and slugging?
Batting average treats every hit the same, while slugging percentage weights hits by the number of bases, so it rewards power.
What is a good slugging percentage?
A slugging percentage around .450 is solid, and .550 or higher is elite power production over a full season.