What is a perfect NFL passer rating?

A perfect NFL passer rating is 158.3. To achieve it, a quarterback must attempt at least 10 passes with minimum 77.5% completions, 12.5 yards per attempt, 11.875% touchdown rate, and 0 interceptions.

How is NFL Passer Rating calculated?

The NFL formula combines four components calculated from attempts: Completion %, Yards Per Attempt, Touchdown %, and Interception %. Each component is capped between 0 and 2.375, added together, divided by 6, and multiplied by 100.

What is the difference between Passer Rating and ESPN QBR?

Passer Rating is an objective mathematical formula adopted in 1973 measuring passing efficiency only. ESPN's Total QBR is a proprietary metric on a 0-100 scale that includes rushing, sacks, intentional fumbles, down-and-distance leverage, and game-situation weighting.

Interactive NFL Analytics Tool

NFL Passer Rating Calculator

Compute official NFL quarterback passer ratings (0 to 158.3) and NCAA passing efficiency with real-time stat breakdowns, step-by-step formula math, and historic quarterback comparisons.

Sample Presets:

Quarterback Passing Stats

Pass Completions (CMP)

Pass Attempts (ATT)

Passing Yards (YDS)

Touchdown Passes (TD)

Interceptions (INT)

Calculated Rating

99.7/ 158.3 MAX

Pro Bowl / High Quality

NCAA Efficiency:148.9

Completion %:68.6%

Yards / Attempt:8 Y/A

TD Rate:5.7%

INT Rate:2.9%

Standard NFL minimum qualification is 14 passing attempts per team game scheduled.

Formula Step-by-Step Breakdown

The NFL formula was engineered by Don Smith and Seymour Siwoff in 1973. It benchmarks four performance criteria on a scale of 0 to 2.375, where 1.0 represents the average NFL performance of the era:

Step A: Completion Factor

((CMP/ATT) - 0.3) * 5

Result: 1.929 (Cap: 0 - 2.375)

Step B: Yards / Attempt Factor

((YDS/ATT) - 3) * 0.25

Result: 1.25 (Cap: 0 - 2.375)

Step C: Touchdown Factor

(TD/ATT) * 20

Result: 1.143 (Cap: 0 - 2.375)

Step D: Interception Factor

2.375 - ((INT/ATT) * 25)

Result: 1.661 (Cap: 0 - 2.375)

Final Rating = ((1.929 + 1.25 + 1.143 + 1.661) / 6) * 100 = 99.7

Understanding NFL Passer Rating

Historical Benchmark

158.3

The theoretical maximum possible in a single game under NFL rules.

Modern League Avg

89.5 - 92.0

Average passer rating across starting quarterbacks in the modern NFL era.

All-Time Career Leader

105.0+

Held by Patrick Mahomes, Aaron Rodgers, and Deshaun Watson (min 1,500 att).

Frequently Asked Questions

What is required to achieve a perfect 158.3 rating?

A quarterback must attempt at least 10 passes and achieve all four capped maximums: at least 77.5% completion rate, minimum 12.5 yards per attempt, 11.875% touchdown percentage (roughly 1 TD every 8.4 passes), and zero interceptions.

Why does NFL Passer Rating not include quarterback sacks or rushing yards?

When the formula was developed in 1973, its sole purpose was to measure pure arm efficiency and ball security. Dual-threat rushing metrics and sack yards lost are incorporated in newer advanced metrics like ESPN QBR and EPA (Expected Points Added).