How to Use Slugging Percentage Calculator

Enter Single hits, double, triple, home runs and then enter the number of At-bats.

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Slugging Percentage Calculator


How To calculate Slugging Percentage

Slugging percentage formula:`((1 Bases) + (2 x (2 Bases)) +( 3 x (3 Bases) ) + (4 x (Home Run)))/(At Bats)`

Example 1: A baseball player finishes a game with 2 home runs, 1 triples, 5 doubles, 8 singles and 25 outs. We calculate the total bases and then divide by the number of at-bats
  • 2 Home Runs: 2 X 4 = 8 Bases
  • 1 Triple: 1 X 3 = 3 Bases
  • 5 Doubles: 5 X 2 = 10 Bases
  • 8 Singles: 8 X 1 = 8 Bases
  • Total bases: 8 + 3 + 10 + 8 = 29 Bases
  • Now to get the at bats we sum home runs,triples,doubles,singles and outs: 2+1+5+8+25 = 41
  • The slugging percentage is (Total Bases)/(At bats): 29/41 = 0.707
Example 2: Let's take Babe Ruth who is the all time leader with a .690 career slugging percentage. For his career, he had 8399 at-bats, 714 home runs, 136 triples, 506 doubles, 1517 singles.
  • 714 Home Runs: 714 X 4 = 2856 Bases
  • 136 Triples: 136 X 3 = 408 Bases
  • 506 Doubles: 506 X 2 = 1012 Bases
  • 1517 Singles: 1517 X 1 = 1517Bases
  • Total Bases: 2856 + 408 + 1012 + 1517 = 5793 Bases
  • Babe Ruth's slugging percentage is (Total Bases)/(At Bats): 5793/8399 = 0.68972496725 rounded to .690

Slugging Percentage(SLG): Measures the batting productivity of a hitter.

Slugging Percentage is different to the on-base percentage as it does not take into account walks and hit-by-pitches. The reason for using a slugging percentage is because when batting average is used, a single run and a home run are considered the same. While in slugging percentage a home run is counted four times in comparison to a single, it also takes into account extra-base hits and doubles.

First base is when the batter has hit the ball without any errors and has reached first base safely. If they then make it to the second base its counted as two bases and so forth. Although if the batter makes the 2nd base and then attempts another base (3rd base) but is caught, they still are credited with a 2 base run. Therefore if a batter is caught before he makes a base he is given which base he last made or 0 if the first base was not made.

What is At bat

At bat is each time a player is at bat, there are certain cases where at-bats are not counted:
  • The batter is hit by a pitch
  • Base on balls
  • Inning ends while the batter is still at bat
  • A sacrifice hit or fly
Slugging Percentage is a good metric to use for power, as it takes into account more than just home runs, sometimes it can be used for pitchers as well. In this cases, it is usually called slugging percentage against. The higher the percentage the better the player.

Often SLG and on base percentage (OBP) are used together.