Passer Rating Calculator
Enter any stat line to get the official NFL passer rating (0–158.3), or switch to the NCAA college formula. See each clamped component broken out, plus completion %, yards/attempt, TD% and INT% — and how the rating stacks up against the current NFL league average.
NFL formula components (each clamped 0–2.375)
How you compare
Your NFL passer rating vs. the current league average
How passer rating works
NFL passer rating condenses four parts of quarterback play — accuracy, depth, scoring, and ball security — into one 0-to-158.3 number. Each of the four components is calculated separately, then each is clamped (floored at 0, capped at 2.375) before being averaged, so no single hot or cold stat can send the whole rating to an extreme. The NCAA (college) version drops the clamps entirely and uses one uncapped linear formula, which is why elite college performances can post ratings well above the NFL's 158.3 ceiling.
How it’s calculated
NFL formula — four components, each clamped to [0, 2.375]:
a = (Cmp/Att − 0.3) × 5 · b = (Yds/Att − 3) × 0.25 · c = (TD/Att) × 20 · d = 2.375 − (INT/Att × 25)
Rating = (a + b + c + d) ÷ 6 × 100.
NCAA formula (no clamps, no cap): Rating = (8.4 × Yards + 330 × TD + 100 × Completions − 200 × INT) ÷ Attempts.
Educational estimate for any stat line you enter — not an official league or NCAA statistics feed.
Worked example
25-of-35 passing for 310 yards, 3 TD, and 1 INT produces an NFL passer rating of 115.2. The four clamped components: completion component 2.071, yards/attempt component 1.464, TD component 1.714, INT component 1.661 — averaged and scaled, (2.071+1.464+1.714+1.661)÷6×100 = 115.2. That same line is a completion rate of 71.4%, 8.86 yards/attempt, a TD rate of 8.6%, and an INT rate of 2.9%. Run through the NCAA formula instead, the same stat line scores 168.4 — above the NFL's maximum, because the college formula has no ceiling.
Common mistakes
- Comparing an NFL rating directly to an NCAA rating — they use different formulas and scales, so a 145 in college is not equivalent to a 145 in the pros.
- Assuming passer rating is a full efficiency picture — it excludes sacks, rushing, and fumbles entirely.
- Forgetting the clamps: a huge-yardage, zero-INT game can't push the rating past 158.3 in the NFL formula, even if the raw components would suggest otherwise.
- Judging one drive or one quarter — small attempt counts make the rating swing wildly game to game.
Where it is used
- Quick, standardized comparison of quarterback efficiency across games and seasons.
- Broadcast graphics and box scores as a single-number summary stat.
- Contract and award (MVP, Pro Bowl) discussions, alongside other advanced metrics.
Frequently asked questions
What is a perfect passer rating?
158.3 is the maximum NFL passer rating. Each of the four components (completion %, yards/attempt, TD%, INT%) is capped at 2.375, so the highest possible average is 2.375 × 4 ÷ 6 × 100 = 158.33, rounded to 158.3. Any stat line good enough to max out all four components scores the same 158.3, whether it's a modest efficient game or a historic one.
Why does the NFL formula clamp each component to 0–2.375?
The clamps prevent one extreme stat (like an interception-free game with huge yardage) from producing an absurd, uncapped number, and they prevent a terrible stat from dragging the rating below zero. Without the floor, a very low completion percentage or a string of interceptions could make a component (and the overall formula) go negative; without the ceiling, a big-yardage or all-touchdown game could spike a single component disproportionately high.
What's the difference between NFL and NCAA passer rating?
The NFL formula averages four separately clamped components (completion %, yards/attempt, TD%, INT%) into a 0–158.3 scale. The NCAA (college) formula has no clamps and no upper limit — it's a single linear formula, (8.4×Yards + 330×TD + 100×Completions − 200×INT) ÷ Attempts — so it rewards big-play, high-TD games more heavily and college ratings routinely run higher than 158.3, sometimes over 200.
What counts as a good passer rating today vs. decades ago?
The league-average NFL passer rating has climbed steadily: it averaged roughly 65 in the 1970s (Pro-Football-Reference league averages, 1970–1979) versus about 91–92 in the 2024–2025 seasons. Rule changes protecting passers and receivers, plus shorter/higher-percentage passing schemes, pushed completion rates and TD rates up league-wide. A 95 rating was well above average in 1975; today it's closer to solidly average-to-good.
Does passer rating measure who the best quarterback is?
Not by itself. It ignores sacks, fumbles, rushing production, and strength of schedule, and it rewards checkdown-heavy, low-risk passing (which raises completion % and lowers INT%) similarly to genuinely explosive passing. It's best used as one efficiency signal alongside yards, TDs, sacks, and advanced metrics like QBR or EPA/play, not as a standalone ranking.