NFL Passer Rating Calculator
Enter a quarterback’s passing stats to calculate official NFL passer rating (0.0 to 158.3).
How passer rating works
The NFL passer rating formula evaluates quarterback passing efficiency using four components: completion percentage, yards per attempt, touchdown rate, and interception rate. Each component is scaled and then capped between 0 and 2.375 before being combined.
a = ((Completions / Attempts) - 0.3) × 5
b = ((Passing Yards / Attempts) - 3) × 0.25
c = (Touchdowns / Attempts) × 20
d = 2.375 - ((Interceptions / Attempts) × 25)
Passer Rating: ((a + b + c + d) / 6) × 100
What is a good passer rating?
- 110+: Elite game
- 95–109.9: Excellent
- 85–94.9: Good
- 70–84.9: Average
- 60–69.9: Below average
- Below 60: Poor performance
Why this calculator is useful
Raw totals like passing yards can be misleading. A quarterback can throw for lots of yards but still have low efficiency due to interceptions or a weak completion rate. Passer rating helps normalize performance and makes game-to-game comparisons easier.
Use cases
- Compare two quarterbacks in the same game
- Track a player’s season efficiency trends
- Evaluate weekly fantasy football performance context
- Analyze coaching strategy and risk-taking in the passing game
Important notes
This tool calculates NFL passer rating, not NCAA passer efficiency and not ESPN’s QBR. Those are different systems with different scales and assumptions. NFL passer rating has a maximum of 158.3, which requires near-perfect efficiency.
Common mistakes when calculating manually
- Forgetting to cap each component between 0 and 2.375
- Mixing up touchdowns and interception terms
- Using attempts of zero (which makes the formula invalid)
- Rounding too early before final calculation
Final takeaway
If you want a fast and accurate quarterback efficiency check, this passer rating calculator gives you the official result instantly, along with component details to understand why the rating is high or low.