Slugging Percentage Calculator

Last Updated: Apr 9, 2025

Created by

Saqib Hanif

Saqib Hanif is the CEO and founder of Calculator Value. He builds calculators and educational content across sports, math, and science, and supports a limited set of construction-related calculators. Read full profile

Our Slugging Percentage Calculator provides highly accurate results based on the official baseball formula: $Slugging Percentage (SLG) = \frac{Singles + 2 \times Doubles + 3 \times Triples + 4 \times Home Runs}{At Bats}$ For example, if a player has 20 singles, 10 doubles, 5 triples, 5 home runs, and 100 at bats, the calculation is: $\frac{20 + 2 (10) + 3 (5) + 4 (5)}{100} = \frac{20 + 20 + 15 + 20}{100} = \frac{75}{100} = 0.750$ This formula ensures precise slugging percentage calculations, allowing players and analysts to effectively measure batting productivity and power.

Industry-Standard Formulas: The formulas and methods used in this calculator follow widely accepted standards in Sports.
Careful Verification: The calculator is tested to ensure it behaves correctly across a range of inputs.
Continuous Updates: The calculator is updated as needed to reflect better accuracy and usability.

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Welcome to the Calculator Value. Slugging percentage is a stat in baseball that gives us insight into how well a player hits for power. While the batting average shows us how often a player gets a hit, the slugging percentage provides extra credit for players for hitting with more power such as doubles, triples, and home runs. The more extra bases a player gets, the higher their Slugging percentage (SLG) will be.

In this article, I will explain everything you need to know about slugging percentage, including What it is, how it is calculated, formula, examples, and some faqs.

Baseball player hitting a ball, illustrating slugging percentage calculation

What is Slugging Percentage (SLG)?

The Slugging Percentage is a statistical measurement used in baseball to help us measure a player's hitting power ability. It is calculated by dividing the number of bases a player achieves through hits by their total number of at-bats (AB). The statistic includes not only the number of hits a player has but also the types of hits, such as singles (1B), doubles (2B), triples (3B) and home runs (HR). However, each type of hit contributes a different weight to the overall calculation.

The name can be misleading, as slugging percentage reflects a player's ability, but it is not a percentage. The SLG range spans from 0.000 to 4.000, with 0.400 considered the Major League Baseball (MLB) average.

How Can I Calculate Slugging Percentage (SLG)?

The following formula is used to calculate the slugging percentage:

SLG = ( Singles + 2 × Doubles + 3 × Triples + 4 × Home Runs) / At Bats

Let's break down the formula:

SLG: Slugging Percentage
Singles (1B): A hit where the batter reaches first base only.
Doubles (2B): A hit where the batter reaches second base.
Triples (3B): A hit where the batter reaches third base.
Home Runs (HR): when a batter hits the ball out of the field, the batter automatically scores a run.
At Bats (AB): It is a time when a player gets a chance to hit but does not include situations like walks or hit-by-pitches.

SLG Real World Calculation Example

Let's understand the slugging percentage deeply with a real-world example of a player with these stats:

100 At Bats (AB)
30 Singles (1B)
15 Doubles (2B)
5 Triples (3B)
10 Home Runs (HR)

Calculate the Total Bases:
- Total Bases = ( 30 × 1 ) + ( 15 × 2 ) + ( 5 × 3 ) + ( 10 × 4 )
- Total Bases = 30 + 30 + 15 + 40 = 115 total bases
Now Calculate Slugging Percentage:
- SLG = 115 / 100 = 1.150

Hence, we have calculated the player's slugging percentage is 1.150.

Frequently Asked Questions

What is a good Slugging Percentage in baseball?

In baseball, 0.400 is considered an above-average slugging percentage in Major League Baseball (MLB), while an SLG of 0.600 or higher is considered excellent.