NFL Passer Rating Calculator (QB Rating)
The official NFL passer rating, from 0 to 158.3, plus the NCAA passing efficiency, completion percentage and yards per attempt.
Results
What this tool does
The NFL adopted this formula in 1973 to compare passers across eras. It scores four things per attempt, completion rate, yards, touchdowns and interceptions, each squeezed between 0 and 2.375, and averages them, so the maximum 'perfect' rating is 158.3: at least 77.5 % completions, 12.5 yards per attempt and touchdowns on 11.875 % of passes, with no interceptions. Because of the caps, piling up yards beyond that point changes nothing. It ignores sacks, runs and the score of the game, which is why newer measures such as ESPN's QBR exist. College football uses a different scale, the NCAA efficiency, shown here too.
Formula
rating = (a + b + c + d) ÷ 6 × 100, each part capped between 0 and 2.375
Variables
| Symbol | Meaning | Unit |
|---|---|---|
at | Pass attempts | — |
cm | Completions | — |
yd | Passing yards | yd |
td | Touchdown passes | — |
it | Interceptions | — |
PR | NFL passer rating | — |
NC | NCAA passing efficiency | — |
CP | Completion percentage | % |
YA | Yards per attempt | yd |
Worked example
- Pass attempts35
- Completions23
- Passing yards265 yd
- Touchdown passes2
- Interceptions1
- NFL passer rating95.5
- NCAA passing efficiency142.5
- Completion percentage65.7 %
- Yards per attempt7.57 yd
Limitations
- The calculation runs at full precision and only the display is rounded. If you copy an intermediate value and retype it, small differences can appear.