Updated · Methodology: named formula library
NBA PER (Player Efficiency Rating)
Quick PER calculation: per-minute production normalized.
Player to League Avg = 1:0 (1 as decimal).
PER
League average PER = 15.0 by definition. Above 25 = MVP territory, 18–22 = star, 13–17 = role player, <10 = bench. Doesn't capture defense well.
Worked Example
0.55 Player to 0.4 League Avg
- a
- 0.55
- b
- 0.4
- Result
- 1:0 (1.38)
0.55 / 0.4 = 1.38. Simplified: 1:0.
When to Use This Calculator
- Compare NBA player production
Limitations & Common Mistakes
- Results are estimates from your inputs.
- Verify with current data for major decisions.
Frequently Asked Questions
How is the NBA PER (Player Efficiency Rating) computed?
Player divided by League Avg, plus a simplified ratio (e.g., 4:3) using greatest common divisor. Both decimal and ratio forms are useful in different contexts: decimal for math, ratio form for comparisons or recipe scaling.
What does Player:League Avg mean?
It's a comparison: for every League Avg unit, you have a corresponding amount of Player. Useful when the absolute numbers matter less than the proportion (e.g., reading 8:1 LTV/CAC immediately tells you the unit economics are healthy without needing the dollar amounts).
Why simplify the ratio?
4:3 is more readable than 200:150. The simplified form (using greatest common divisor) preserves the proportion while making it easier to interpret. Common simplified ratios: 16:9 (widescreen), 4:3 (legacy displays), 3:1 (LTV:CAC for SaaS).
When is a ratio more useful than the absolute values?
Comparison across scales. A $1B company and a $1M company can both have a 3:1 LTV:CAC; the ratio reveals comparable unit economics regardless of scale. Use ratios for benchmarking; use absolute numbers for budgeting.