Football Passer Rating Calculator (QBR)
Compute the classic NFL passer rating (0–158.3) from completions, attempts, yards, touchdowns and interceptions — the simple quarterback rating formula.
How it works
a = ((Comp/Att) − 0.3) × 5 · b = ((Yds/Att) − 3) × 0.25 · c = (TD/Att) × 20 · d = 2.375 − (Int/Att) × 25 · each clamped to 0–2.375 · Rating = (a+b+c+d) ÷ 6 × 100
The NFL passer rating combines four per-attempt rates — completion percentage, yards, touchdowns and interceptions — each scaled and then capped between 0 and 2.375. Averaging the four capped components and multiplying by 100 gives a number that tops out at 158.3, the "perfect" rating. Because every term is capped, a quarterback cannot offset a terrible day in one category with a monster number in another.
Worked example
For 20 of 30 for 250 yards, 2 TD and 1 INT: a = (0.667 − 0.3) × 5 = 1.833, b = (8.33 − 3) × 0.25 = 1.333, c = (0.0667) × 20 = 1.333, d = 2.375 − (0.0333 × 25) = 1.542. Sum 6.042 ÷ 6 × 100 = 100.7 passer rating.
Sources: Passer rating — Wikipedia
Frequently asked questions
Is this the same as ESPN’s Total QBR?
No. This is the traditional NFL passer rating (the 0–158.3 scale), computed only from box-score passing stats. ESPN’s Total QBR is a separate proprietary 0–100 metric that also weighs rushing, sacks, fumbles and game situation.
What is a perfect passer rating?
The maximum is 158.3, reached when all four components hit their 2.375 cap — roughly a 77.5%+ completion rate, 12.5+ yards per attempt, a touchdown on at least 11.875% of attempts and zero interceptions.
Why is the college formula different?
College football uses a different passer efficiency rating with different weights and no 0–2.375 caps, so college and NFL passer numbers are not directly comparable.
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This calculator is for educational purposes. Double-check important results before acting on them.