NFL Passer Rating Calculator
Calculate a quarterback’s passer rating using the official NFL formula. Enter the stats below to see the result.
Passer Rating Results
Complete Guide: How to Calculate Passer Rating in the NFL
The NFL passer rating (also known as quarterback rating or QB rating) is the standard measure of a quarterback’s passing performance. Developed in 1973, this formula evaluates five key passing statistics to produce a single number that ranges from 0 to 158.3, with higher values indicating better performance.
The NFL Passer Rating Formula
The passer rating is calculated using four components, each with specific weights:
- Completion Percentage (CMP%) – (Completions/Attempts) × 100
- Yards per Attempt (Y/A) – Passing Yards/Attempts
- Touchdown Percentage (TD%) – (Touchdowns/Attempts) × 100
- Interception Percentage (INT%) – (Interceptions/Attempts) × 100
The formula then applies these calculations to the following equation:
Passer Rating = [(CMP% × 5) + (Y/A × 0.25) + (TD% × 20) + 2.375 – (INT% × 25)] / 6 × 100
Understanding the Components
1. Completion Percentage (CMP%)
Measures accuracy by dividing completions by attempts. The NFL average is typically around 60-65%.
Maximum value: 2.375 (for 77.5% completion rate)
2. Yards per Attempt (Y/A)
Evaluates efficiency by dividing total yards by attempts. Elite QBs average 7+ yards per attempt.
Maximum value: 2.375 (for 12.5+ yards per attempt)
3. Touchdown Percentage (TD%)
Shows scoring efficiency. Top QBs have TD% around 5-7%.
Maximum value: 2.375 (for 11.875% TD rate)
4. Interception Percentage (INT%)
The only negative component. Lower is better. Elite QBs keep INT% below 2%.
Minimum value: 0 (for 0% interception rate)
Historical Context and Perfect Rating
A perfect passer rating of 158.3 requires:
- 77.5% completion rate (or higher)
- 12.5+ yards per attempt
- 11.875% touchdown rate
- 0% interception rate
Only 73 perfect passer ratings have been achieved in NFL history (as of 2023), with Peyton Manning holding the record for most perfect games (4).
Comparison of Elite Quarterbacks (2022 Season)
| Quarterback | Completions | Attempts | Yards | TDs | INTs | Passer Rating |
|---|---|---|---|---|---|---|
| Patrick Mahomes | 435 | 648 | 5,250 | 41 | 12 | 105.2 |
| Jalen Hurts | 306 | 460 | 3,701 | 22 | 6 | 101.5 |
| Josh Allen | 400 | 628 | 4,283 | 35 | 14 | 96.6 |
| Joe Burrow | 414 | 606 | 4,475 | 35 | 12 | 100.8 |
| Tua Tagovailoa | 259 | 354 | 3,548 | 25 | 8 | 105.5 |
Limitations of Passer Rating
While useful, passer rating has several limitations:
- No context for situation – Doesn’t account for game situations (3rd down, red zone, etc.)
- No rushing contribution – Ignores a QB’s running ability (important for modern dual-threat QBs)
- No sack consideration – Doesn’t penalize for sacks taken
- Arbitrary scaling – The 158.3 maximum is based on historical averages rather than absolute performance
- No strength of opponent – Doesn’t adjust for quality of defense faced
These limitations led to the development of more advanced metrics like:
- ESPN’s Total QBR (0-100 scale)
- Pro Football Focus (PFF) grades
- Expected Points Added (EPA) per play
- Completion Percentage Over Expectation (CPOE)
How Passer Rating Affects Contracts and Draft Status
Passer rating significantly impacts:
1. NFL Draft Position
College QBs with high passer ratings (typically 140+ in NCAA) are more likely to be first-round picks. The 2023 NFL Draft saw:
- Bryce Young: 163.6 college rating (1st overall)
- C.J. Stroud: 170.6 college rating (2nd overall)
- Anthony Richardson: 136.3 college rating (4th overall)
2. Contract Negotiations
Established QBs use passer rating as leverage for contracts. Recent examples:
- Patrick Mahomes (105.2 rating in 2022) – 10-year, $450M extension
- Josh Allen (96.6 rating) – 6-year, $258M extension
- Joe Burrow (100.8 rating) – 5-year, $275M extension
College vs. NFL Passer Rating Differences
The NCAA uses a different passer rating formula that produces higher numbers (maximum of ~1,261.7). Key differences:
| Factor | NFL Formula | NCAA Formula |
|---|---|---|
| Maximum Value | 158.3 | ~1,261.7 |
| Completion Weight | ×5 (max 2.375) | ×100 |
| Yards Weight | ×0.25 (max 2.375) | ×8.4 |
| TD Weight | ×20 (max 2.375) | ×330 |
| INT Weight | ×-25 | ×-200 |
This explains why college QBs often have ratings above 150, while NFL ratings rarely exceed 120.
Advanced Applications of Passer Rating
Teams and analysts use passer rating in several advanced ways:
-
Situational Passer Rating – Calculating rating for specific situations:
- 3rd down passer rating
- Red zone passer rating
- Blitz vs. non-blitz rating
- Play-action passer rating
-
Expected Passer Rating – Comparing actual rating to expected rating based on:
- Receiver separation
- Pressure applied
- Throw distance
- Defensive coverage
- Win Probability Added – Measuring how much a QB’s passing contributes to winning
- Clutch Performance Rating – Rating in 4th quarter with game within one score
How to Improve Your Passer Rating
For quarterbacks looking to improve their passer rating:
1. Accuracy Drills
Focus on:
- Footwork consistency
- Throwing mechanics
- Anticipation throws
- Touch passes
2. Decision Making
Develop:
- Pre-snap reads
- Progressive reading
- Checkdown discipline
- Throwaway awareness
3. Situational Awareness
Understand:
- Down and distance
- Field position
- Game clock management
- Score differential
Frequently Asked Questions
What’s considered a good passer rating?
- Elite: 100+ (Top 5 QBs)
- Very Good: 90-99.9 (Pro Bowl caliber)
- Average: 80-89.9 (Starter quality)
- Below Average: 70-79.9 (Backup level)
- Poor: Below 70 (Replacement level)
Who has the highest career passer rating?
As of 2023 (minimum 1,500 attempts):
- Patrick Mahomes – 105.6
- Aaron Rodgers – 103.6
- Deshaun Watson – 101.3
- Russell Wilson – 99.6
- Tony Romo – 97.1
Has anyone had a perfect season?
No QB has maintained a perfect 158.3 rating over a full season. The highest single-season ratings:
- Peyton Manning (2004) – 121.1
- Aaron Rodgers (2011) – 122.5
- Patrick Mahomes (2018) – 113.8
- Tom Brady (2007) – 117.2
How does weather affect passer rating?
Studies show passer ratings drop in:
- Cold weather: -5 to -10 points when temp < 32°F
- Wind: -3 to -7 points with winds > 15 mph
- Rain/Snow: -8 to -15 points in precipitation
Dome QBs typically have higher ratings than outdoor QBs.
Authoritative Resources
For more official information about passer rating calculations:
- Official NFL Passer Rating Formula – The NFL’s official explanation of how passer rating is calculated
- Pro Football Hall of Fame: Evolution of Passer Rating – Historical context from the Pro Football Hall of Fame
- NCAA Passer Rating Calculation – How college passer rating differs from the NFL version
Conclusion
The NFL passer rating remains one of the most important statistics for evaluating quarterback performance, despite its limitations. Understanding how it’s calculated provides valuable insight into what makes an effective passer in the NFL. While newer metrics have emerged to address some of its shortcomings, passer rating continues to be a standard reference point for comparing quarterbacks across eras.
For aspiring quarterbacks, focusing on the four components of passer rating—completion percentage, yards per attempt, touchdown percentage, and interception avoidance—provides a clear roadmap for improvement. Meanwhile, football analysts continue to develop more sophisticated metrics that build upon the foundation established by the passer rating formula.