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Slugging percentage (SLG) calculator

Slugging percentage is total bases divided by at-bats. Total bases are singles + 2 × doubles + 3 × triples + 4 × home runs. 42 hits with 9 doubles, 1 triple, and 5 home runs is 27 singles and 68 total bases, so 68 ÷ 137 at-bats = .496.

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Slugging percentage calculator

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Showing an example. Change any field to use your own numbers.

Official at-bats. Walks, hit by pitch, and sacrifices are not at-bats.

All hits, including doubles, triples, and home runs.

Blank counts as 0.

Blank counts as 0.

Blank counts as 0.

Your answer

Slugging percentage

.496

68 total bases in 137 at-bats

Fill in the fields to see the answer.

  1. Singles27 hits − doubles − triples − home runs42 − 9 − 1 − 5
  2. Total bases68 singles + 2 × doubles + 3 × triples + 4 × home runs27 + 2 × 9 + 3 × 1 + 4 × 5
  3. SLG.496 total bases ÷ at-bats68 ÷ 137

Slugging percentage for total bases and at-bats

Total bases20 AB50 AB100 AB200 AB400 AB600 AB
5.250.100.050.025.013.008
10.500.200.100.050.025.017
201.000.400.200.100.050.033
402.000.800.400.200.100.067
804.0001.600.800.400.200.133
150–3.0001.500.750.375.250
250––2.5001.250.625.417
350––3.5001.750.875.583

How to calculate slugging percentage

Start from the hits in the box score and take out the extra-base hits to get singles. Weight each hit by the bases it earned: a single is 1, a double 2, a triple 3, a home run 4. Add them up and divide by at-bats.

Despite the name, slugging is not a percentage. It is average bases per at-bat, so it can go above 1.000 and tops out at 4.000.

Questions

Do walks count in slugging percentage?

No. Slugging only uses at-bats and the bases earned on hits. Walks show up in on-base percentage.

What is the highest possible slugging percentage?

4.000, a home run in every at-bat.

Is my data stored?

No. The math runs in your browser and nothing you type is sent anywhere or put in analytics.

Sources

Formulas and rules checked against these sources on October 28, 2026. Leagues and associations change their rules, so when your league's rulebook differs, follow your league.

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