## SLG Calculator

## What is Slugging Percentage?

SLG is a baseball statistic used to put a batter’s number of bases they have earned through batting in comparison to the number of times they have been at the plate.

It is intended to be another tool for measuring a batter’s ability to earn bases along with batting average and on-base percentage as it includes the total number of bases earned as opposed to just the amount of time they reach first base.

## How to calculate SLG

In Baseball, on slugging percentage is calculated as follows:

Slugging Percentage (SLG) = (1 base hits + (2 x 2 base hits) + (3 x 3 base hits) + (4 x home runs)) / at bats.

## Example

If a batter has been at bat 127 times and in that time has made: 20 1 base hits, 5 2 base hits, 1 3 base hit, and 4 home runs, then:

20 1 base hits are = 20.

5 2 base hits are 5 x 2 = 10.

1 3 base hit is 1 x 3 = 3.

4 home runs is 4 x 4 = 16.

Total bases earned is 20 + 10 + 3 + 16 = 49.

49 divided by 127 at bats is 0.386

Therefore, the batter’s on slugging percentage is 0386.

## What qualifies as a “hit”?

A hit records when the batter safely reaches first base after hitting the ball into fair territory without the benefit of an error or a fielder’s choice.

If the batter (or runner) attempts another base and is caught out, they are still credited with the hit as long as they have reached 1st base.

2 base hits, 3 base hits, and home runs are all the same qualifications as a “hit”, however, they are when the batter arrives at that base in the same play.

## What counts as an “At Bat”?

An “at bat” is counted each time the player is at bat. At bats are not counted in specific circumstances, including:

- The batter hit by a pitch
- A sacrifice fly or sacrifice hit
- Base on balls
- The inning ends while still at bat
- The batter is replaced by another hitter before the turn is complete

## Resources

- Wikipedia – Slugging Percentage
- Wikipedia – Hit (Baseball)
- Wikipedia – At bat
- Major League Baseball – Official Rules: 10.01 – The Rules of Scoring
- ESPN – MLB Statistics – Batting
- Baseball-reference.com – Career Leaders for SLG
- NCAA – Official Baseball Statistics Rules
- NCAA – Official Softball Statistics Rules
- NCAA – The Official NCAA Baseball and Softball Scorebook
- NFHS – Statistician’s Manual
- International Baseball Federation – Scoring Manual

## Baseball Statistics Calculators

- At Bats per Home Run (ABHR)
- Batting Average (BA)
- Batting Average on Balls in Play (BABIP)
- Walks per 9 Innings (BB/9)
- Walk to Strikeout Ratio (BB/K)
- Batting Park Factor (BFP)
- Component ERA (CERA)
- Defense Independent Component ERA (DICE)
- Earned Run Average (ERA)
- Equivalent Average (EqA)
- Fielding Percentage (FCPT)
- Fielding Percentage (FIP)
- Ground Ball / Fly Ball (GB/FB)
- Ground Outs / Fly Outs (GO/AO)
- Gross Production Average (GPA)
- Hits per 9 Innings (H/9)
- Innings Pitched per Game (IP/GS)
- Isolated Power (ISO)
- Strike to Walk Ratio (K/BB)
- Left on Base Percentage (LOB%)
- On Base Percentage (OBP)
- On Base Plus Slugging (OBPS)
- Opponents Batting Average (OBA)
- Plate Appearances per Strikeout (PA/SO)
- Power Finesse Ratio (PFR)
- Pythagorean Expectation
- Run Average (RA)
- Runs Created (RC)
- Range Factor (RF)
- Runs Produced (RP)
- Stolen Base Percentage (SB%)
- Slugging Percentage (SLG)
- Save Percentage (SV%)
- Total Average (TA)
- Total Bases (TB)
- Total Chances (TC)
- Times on Base (TOB)
- Walks and Hits per Inning Pitched (WHIP)
- Extrapolated runs (XR / XRR / XRB)