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Slugging Percentage Calculator

Work out slugging percentage instantly with clear inputs, formula shown and shareable results.

About Slugging Percentage Calculator

Total bases weight each hit by its length, one through four, and slugging is total bases over at bats; isolated power subtracts batting average to leave only the extra bases. Isolated power separates a singles hitter from a slugger, since two players can share a .305 average with very different run-producing value.

Formulas

Slugging

SLG = (singles + 2 x doubles + 3 x triples + 4 x home runs) / at bats

Isolated power

ISO = SLG - batting average

Worked example

With the default values below, Slugging Percentage Calculator returns Slugging percentage of 0.4764. Change any input above and every figure here is recalculated in your browser.

Inputs used

Singlesminimum 0
110
Doublesminimum 0
32
Home runsminimum 0
22
At batsminimum 1
550

Results

Slugging percentage
0.4764
Total bases
262
Isolated power
0.1782
Share of hits that are extra base hits
32.93%

Step by step

  1. 1Values used
  2. 2Slugging
  3. 3Isolated power
  4. 4Slugging percentage= 0.4764
  5. 5Total bases= 262
  6. 6Isolated power= 0.1782
  7. 7Share of hits that are extra base hits= 32.93

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is the Slugging Percentage figure worked out?

SLG = (singles + 2 x doubles + 3 x triples + 4 x home runs) / at bats. Total bases weight each hit by its length, one through four, and slugging is total bases over at bats; isolated power subtracts batting average to leave only the extra bases.

Why does this matter?

Isolated power separates a singles hitter from a slugger, since two players can share a .305 average with very different run-producing value.

What do I need to enter?

Enter singles, doubles, home runs, at bats. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.

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