NCAA Passer Efficiency Rating Calculator
NCAA Passer Efficiency Rating Calculator
College American football’s passing efficiency rating — 8.4 per yard, 330 per touchdown, minus 200 per interception and 100 per completion, over attempts. No caps, no ceiling, and a different answer from the NFL’s formula on the same line.
NCAA passing efficiency rating, with the NFL figure beside it
Four weights, no capsA constructed season of 200 completions from 300 attempts for 2,700 yards, with 25 touchdown passes and 8 interceptions
One line of arithmetic, four weights, no bounds
equivalently: completion % + 3.3 × touchdown % − 2.0 × interception % + 8.4 × yards per attempt
- the four weights, corroborated twice
- Sports-Reference’s college glossary prints “(8.4 * Yds + 330 * TD – 200 * Int + 100 * Cmp) / Att” and attributes it to the NCAA; Dartmouth’s CHANCE teaching aid prints the identical expression per percentage. A percentage is a hundred times a rate, so those are one formula
- a third check, from the published extremes
- Wikipedia gives a theoretical maximum of 1,261.6 and minimum of −731.6 without printing the formula — and 8.4 × 99 + 330 + 100 is 1,261.6 exactly, while 100 − 8.4 × 99 is −731.6 exactly. The extremes re-derive all four weights from the other end, which is the check that catches a transposed pair
- what no source read could supply
- the NCAA’s own document. Dartmouth names Steven Hagwell’s 1993 Football Statistician’s Manual, published by the NCAA and not reachable here, so the weights rest on three agreeing secondary sources
- no caps, and therefore no ceiling
- Wikipedia states the college formula “does not impose limits on the four components”. A season above 158.3 is ordinary and a single strong game rates in the hundreds
Worked example
A constructed season of 200 completions from 300 attempts for 2,700 yards, with 25 touchdown passes and 8 interceptions
Yards: 8.4 × 2,700 = 22,680
Touchdowns: 330 × 25 = 8,250. Interceptions: −200 × 8 = −1,600. Completions: 100 × 200 = 20,000
Sum 49,330, divided by 300 attempts = 164.4
Per attempt the contributions are 75.60 from yards, 27.50 from touchdowns, −5.33 from interceptions and 66.67 from completions. The yards term is the largest, and that is the formula's character
The same line under the NFL formula gives 111.8, so the NCAA rating reads 52.6 higher on identical passing
Push it where the NFL cannot follow: 100 of 100 for 2,000 yards with 40 touchdowns and no interceptions gives 400.0 here and exactly 158.3 there, the NFL scale having run out. That is why the two must never share a column
Each weight was checked alone. Add 100 yards and the rating rises by 8.4 × 100 ÷ 300 = 2.80; one more touchdown, 330 ÷ 300 = 1.10; one more interception, a fall of 200 ÷ 300 = 0.67; one more completion, 100 ÷ 300 = 0.33. Transpose any pair of the four weights and all four movements change
The two formulas’ weights, put on one scale
| Per unit of | NCAA passing efficiency rating | NFL passer rating, on its own 0 to 158.3 scale |
|---|---|---|
| one percentage point of completions | 1.0 | 0.833 |
| one percentage point of touchdowns | 3.3 | 3.333 |
| one percentage point of interceptions | −2.0 | −4.167 |
| one yard per attempt | 8.4 | 4.167 |
| a constant, added regardless | none | 2.083 |
| cap on any one component | none | 2.375, which is 39.583 on this scale |
| maximum | no practical ceiling; 1,261.6 in theory | exactly 158.3 |
| minimum | −731.6 in theory | exactly 0 |
The same passing line under both formulas
| Passing line | NFL passer rating | NCAA passing efficiency | Gap |
|---|---|---|---|
| Peyton Manning, 2004: 336 of 497 for 4,557, 49 TD, 10 INT | 121.1 | 173.1 | 52.0 |
| This page’s default: 200 of 300 for 2,700, 25 TD, 8 INT | 111.8 | 164.4 | 52.6 |
| 80 of 100 for 1,300, 12 TD, 0 INT | 158.3, the NFL maximum | 228.8 | 70.5 |
| 100 of 100 for 2,000, 40 TD, 0 INT | 158.3, still the maximum | 400.0 | 241.7 |
| 30 of 100 for 300, 0 TD, 10 INT | 0.0, the NFL minimum | 35.2 | 35.2 |
A different formula, not a different estimate of the same thing
College American football rates its passers with a formula the NFL does not use, and the two are routinely quoted in the same breath as though they were one scale. The NCAA’s passing efficiency rating takes the same five counts — attempts, completions, yards, touchdown passes and interceptions — and combines them in one line: 8.4 for every yard, 330 for every touchdown, minus 200 for every interception and 100 for every completion, divided by attempts.
It has no caps, and everything else follows from that. The NFL’s rating clamps each of its four components at 2.375, which is why it stops at 158.3; the college formula clamps nothing. Wikipedia puts the theoretical maximum at 1,261.6 — a single 99-yard touchdown pass completed on the only attempt — and the minimum at minus 731.6. Neither is reachable over a season, but a season above 158.3 is completely ordinary, and a reader who knows only the NFL scale will think something has gone wrong.
There are two passer ratings and they are not two estimates of one thing. The National Football League’s four-category system, adopted in 1973, caps each component and so stops at 158.3. The NCAA’s passing efficiency rating caps nothing, weights a yard per attempt about twice as heavily and an interception about half as heavily, and has no practical ceiling. This page computes one as its headline and prints the other for the same line beside it, so the gap is visible on whatever you enter. On the Pro Football Hall of Fame’s own worked example — Peyton Manning’s 2004, 336 of 497 for 4,557 yards with 49 touchdowns and 10 interceptions — the NFL formula gives 121.1 and the NCAA formula 173.1, a gap of 52.0 on one identical line. A college rating above 158.3 is therefore ordinary.
The divergence is almost entirely two weights. Put both formulas on one scale, as the first table does, and the touchdown weights turn out nearly identical — 3.3 against the NFL’s effective 3.333 per percentage point — with the completion weights close. But the NCAA formula prices a yard per attempt at 8.4 where the NFL’s effective weight is 4.167, just over twice, and charges 2.0 for a percentage point of interceptions where the NFL charges 4.167, under half. Relative to the professional formula, the college one rewards throwing deep and forgives throwing it to the other team. That is a statement about the formulas and not about the players.
On the sourcing, plainly. The NCAA’s own document — Steven Hagwell’s 1993 Football Statistician’s Manual, which Dartmouth names as where the rating is discussed — was not reachable for this page, and nor was the current NCAA statisticians’ manual. What the page has instead is three secondary sources agreeing exactly: Sports-Reference’s college glossary printing the per-attempt form and attributing it to the NCAA, Dartmouth printing the per-percentage form, and Wikipedia’s theoretical extremes, which re-derive all four weights from the other direction. Three agreeing secondary sources are not a governing body’s own text and this page does not pretend otherwise. Pro-Football-Reference declines to print either formula and says only that “pro and college football use different formulas”.
What the rating cannot do is what the NFL passer rating cannot either: it knows nothing about rushing, sacks, fumbles, down, distance, score or time, and nothing about who dropped the ball. The rates underneath it are on the passing rates calculator, and the attempt to answer what all of these leave out is ESPN’s Total QBR, which that page explains rather than computes.
Every figure here is arithmetic on counts a league or a statistics provider publishes. This page produces no commercial prediction of any kind, and no page in this section does.
Frequently asked questions
What is the NCAA passer rating formula?
(8.4 times passing yards + 330 times touchdown passes minus 200 times interceptions + 100 times completions) divided by attempts. Sports-Reference’s college glossary prints exactly that and attributes it to the NCAA; Dartmouth’s teaching aid prints the same thing as completion percentage plus 3.3 times touchdown percentage minus 2.0 times interception percentage plus 8.4 times yards per attempt.
Why is a college passer rating higher than an NFL one?
Because it is a different formula with different weights and no caps. On Peyton Manning’s 2004 line the NFL formula gives 121.1 and the NCAA formula gives 173.1 — a gap of 52.0 on identical passing. The college formula weights a yard per attempt about twice as heavily and an interception about half as heavily, and nothing in it is capped.
Can the NCAA passer rating go above 158.3?
Easily and often. 158.3 is a feature of the NFL formula’s caps and has no meaning in the college one, which imposes no limits on its components. The theoretical maximum is 1,261.6 and individual games well into the three hundreds are routine.
Can I convert a college rating into an NFL rating?
No, and nothing here offers to. They are different quantities sharing a name and a rough scale. The page computes both on whatever line you enter and prints them side by side instead, because there is no conversion factor — the gap depends on the line, running from 35 points to 242 on the examples above.
Does the NCAA publish this formula itself?
It is attributed to the NCAA by every source read for this page, and the NCAA’s own 1993 Football Statistician’s Manual is named as where it is discussed — but that document could not be opened, and nor could the current statisticians’ manual. The weights rest on three agreeing secondary sources, one of which re-derives them from the published extremes.
Related calculators
References
- Sports-Reference. College Football Stats Glossary — “Passing Efficiency Rating; statistic used by the NCAA to evaluate passing efficiency. The formula is (8.4 * Yds + 330 * TD − 200 * Int + 100 * Cmp) / Att.” Also “Adjusted Passing Yards per Attempt; the formula is (Yds + 20 * TD − 45 * Int) / Att” and yards per attempt as “Yds / Att”. A short page, about 3,000 characters, with the formulas in body text rather than images. sports-reference.com/cfb (read 15 Oct 2026).
- CHANCE teaching aid (Dartmouth College). NCAA — “Rating = (% Completions) + 3.3(% TD) − 2.0(% Int) + 8.4(Yds/Att)”, “generally given to the nearest tenth”, with no truncation mentioned. A percentage being a hundred times a rate, that is the identical expression to Sports-Reference’s, written per percentage — an independent corroboration of all four weights. It names the governing body’s own documentation, Steven Hagwell (ed.), 1993 Football Statistician’s Manual, “also put out by the NCAA”, which was NOT reachable for this batch. chance.dartmouth.edu (read 15 Oct 2026).
- Wikipedia. Passer rating — cited for history and bounds, NOT for either formula: both are images and did not arrive in the fetched text. “Each of those variables is scaled to a value between 0 and 2.375, with 1.0 being statistically average”; “If the result of any calculation is greater than 2.375, it is set to 2.375”; range 0 to 158.3. Pete Rozelle asked the league’s statistical committee — the Hall of Fame’s Don Smith, Elias Sports Bureau’s Seymour Siwoff and the NFL’s Don Weiss — for a better system in 1971; they fitted it to 1960-1970 pro passing and the NFL adopted it in 1973. The college formula “does not impose limits on the four components”, was fitted to 1965-1978 college data, and has a theoretical maximum of 1,261.6 and minimum of −731.6 (read 15 Oct 2026).
- CHANCE teaching aid (Dartmouth College). NFL rating data — the same formula with the ÷ 6 and × 100 folded in: “[5(%Completions − 30)/6] + [10(%TDs)/3] + [25(19 − 2(%Int))/12] + [25(Yards/Attempt − 3)/6]”, where “each item in [ ] is to be truncated to be no smaller than 0 and no larger than 475/12 (giving a maximal rating of 475/3 or 158.3)”, rounded “to the nearest tenth”. Its no-truncation form, “Rating = [25 + 10(%Completions) + 40*(%TD) − 50(%INT) + 50(YD/ATT)]/12”, is where this site’s per-unit NFL weights come from. It cites the NFL’s 1977 National Football League Passer Rating System, “36 pages, 25 of them look-up tables”. chance.dartmouth.edu (read 15 Oct 2026).
- Pro-Football-Reference. Glossary — “Note that pro and college football use different formulas” for passer rating, and it prints neither. Adjusted yards per attempt is “(pass yards + 20*(pass TD) − 45*(interceptions thrown))/(passing attempts)”, with the note “that we are now using 20 yards per TD instead of 10”; adjusted net yards per attempt is “(pass yards + 20*(pass TD) − 45*(interceptions thrown) − sack yards)/(passing attempts + sacks)”. Team-level yards per attempt “uses gross passing yardage”. pro-football-reference.com (read 15 Oct 2026).