Slugging Percentage Calculator
Calculate SLG - the total bases per at-bat for baseball hitters
⚾ Batting Statistics
Plate appearances excluding walks, HBP, sacrifices
Slugging Percentage
SLG Scale
Total Bases
At-Bats
Total Hits
Bases/At-Bat
SLG Rating Scale
| Rating | SLG Range | Description |
|---|---|---|
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About Slugging Percentage Calculator
What is Slugging Percentage?
Slugging Percentage (SLG) is a baseball statistic that measures a batter's power and extra-base hit ability. Unlike batting average, which treats all hits equally, slugging percentage gives more weight to extra-base hits.
Slugging Percentage Formula
SLG = (1B + (2 × 2B) + (3 × 3B) + (4 × HR)) / AB
Components
- 1B (Singles): Hits where the batter reaches first base
- 2B (Doubles): Hits where the batter reaches second base
- 3B (Triples): Hits where the batter reaches third base
- HR (Home Runs): Hits where the batter rounds all bases
- AB (At-Bats): Total plate appearances excluding walks, HBP, sacrifices
Understanding Total Bases
The numerator represents total bases:
| Hit Type | Bases |
|---|---|
| Single | 1 |
| Double | 2 |
| Triple | 3 |
| Home Run | 4 |
SLG Rating Scale
| SLG | Rating | Description |
|---|---|---|
| < 0.350 | Poor | Struggling at the plate |
| 0.350 - 0.400 | Below Average | Room for improvement |
| 0.400 - 0.450 | Average | League average production |
| 0.450 - 0.500 | Above Average | Solid power hitter |
| 0.500 - 0.550 | Great | Premium offensive player |
| ≥ 0.550 | Excellent | Elite power, MVP caliber |
Example Calculations
Example 1: Power hitter
- Singles: 80, Doubles: 35, Triples: 2, Home Runs: 40, At-Bats: 500
- Total Bases = 80 + (35 × 2) + (2 × 3) + (40 × 4) = 80 + 70 + 6 + 160 = 316
- SLG = 316 / 500 = 0.632 (Excellent)
Example 2: Contact hitter
- Singles: 120, Doubles: 25, Triples: 5, Home Runs: 10, At-Bats: 550
- Total Bases = 120 + (25 × 2) + (5 × 3) + (10 × 4) = 120 + 50 + 15 + 40 = 225
- SLG = 225 / 550 = 0.409 (Average)
Historical Context
Slugging percentage was created in the early days of baseball statistics. The stat was first officially tracked in 1923.
Notable Career Slugging Leaders (All-Time)
| Player | Career SLG |
|---|---|
| Babe Ruth | 0.690 |
| Ted Williams | 0.634 |
| Lou Gehrig | 0.632 |
| Mike Trout | ~0.580 |
| Barry Bonds | 0.607 |
Related Statistics
- OPS: On-base Plus Slugging (OBP + SLG)
- ISO: Isolated Power (SLG - BA)
- wOBA: Weighted On-Base Average
- OBP: On-Base Percentage
Limitations
- Doesn't account for walks or on-base ability
- Context-independent (ignores clutch situations)
- Park factors can influence results
- Home runs are weighted only 4x singles (some argue under/over-weighted)
Note: Slugging percentage is best used alongside other metrics like OBP to get a complete picture of a hitter's offensive value. OPS (OBP + SLG) is a popular combined metric.
📐 The Formula
SLG = (1B + (2 × 2B) + (3 × 3B) + (4 × HR)) ÷ AB
Pro Tip: Combine SLG with OBP (On-Base Percentage) to get OPS, one of the most useful all-around batting statistics!