Formula and method
a = 5(C/ATT − 0.3); b = 0.25(YDS/ATT − 3); c = 20(TD/ATT); d = 2.375 − 25(INT/ATT). Clamp each to 0–2.375. Rating = 100(a+b+c+d)/6.
Worked example
For 20 completions on 30 attempts, 250 yards, 2 touchdowns, and 1 interception: a = 1.8333, b = 1.3333, c = 1.3333, d = 1.5417. Rating ≈ 100.7.
What the result means
The rating combines completion rate, yards per attempt, touchdown rate, and interception rate. Its conventional one-decimal ceiling is 158.3.
Common input mistakes
- Calling this result Total QBR. It is a different proprietary metric.
- Using rushing or receiving touchdowns instead of passing touchdowns.
- Subtracting sack yards from gross passing yards.
Scope and limitations
This is the traditional NFL passer-rating formula only. It does not measure rushing, sacks, game context, win probability, or predict performance.
This is a deterministic calculation aid, not a player evaluation, prediction, fantasy recommendation, or betting tool. No live statistics are fetched.
Privacy
Entered statistics are calculated in this browser tab. This tool has no account, input submission, URL state, or persistent storage for your entries.