Passer Rating Calculator
Computes the NCAA college passing-efficiency rating, which shares a name with the NFL statistic and almost nothing else, and shows both figures side by side so it is obvious why the same quarterback is quoted at two wildly different numbers.
Passer Rating Calculator
Results recalculate instantly on every keystroke. Nothing you type is transmitted.
What this result does not account for
- Rushing production is excluded entirely, which is a larger omission in college football than in the NFL.
- No adjustment is made for opponent quality, and college schedules are highly unbalanced.
- The formula's weights were chosen rather than measured from run or point expectancy.
- There is no exact conversion to the NFL scale, so cross-league comparison remains approximate at best.
- Sacks, fumbles and game situation do not appear.
In short: College football uses a completely different formula: (8.4×yards + 330×TD + 100×completions − 200×INT) ÷ attempts. It has no caps, so ratings above 200 are possible and a 158.3 ceiling does not exist. The same passing line can read 282.9 in college and 158.3 in the NFL — the two scales are not convertible.
Formula
NCAA = (8.4·YDS + 330·TD + 100·COMP − 200·INT) ÷ ATT
No component caps, no ceiling, no floor
NFL, for contrast: four components each clamped to [0, 2.375], maximum 158.3
[('8.4', 'Points per passing yard. Volume drives this formula in a way the capped NFL version prevents.'), ('330', 'Points per touchdown pass — equivalent to about 39 passing yards at this weighting.'), ('100', 'Points per completion, worth about 12 yards. Completing passes is rewarded twice: once here and once through the yards.'), ('−200', 'The interception penalty, equivalent to giving back about 24 yards. There is no floor, so enough interceptions produce a negative rating.')]
Worked Example
- Multiply each category by its weight. Yards by 8.4, touchdowns by 330, completions by 100, and interceptions by minus 200.
- Sum the four terms. For Joe Burrow's 2019 season that is 47,636 + 19,800 + 40,200 − 1,200 = 106,436.
- Divide by attempts. 106,436 over 527 attempts gives 202.0, the single-season record.
- Do not compare it to an NFL rating. The same line under the NFL formula would be capped and would read far lower. The scales are not convertible.
- Read it against college reference points. FBS average is near 125, good is 140 to 170, elite is above 170.
Joe Burrow's 2019 season — 402 of 527 for 5,671 yards, 60 touchdowns and six interceptions — produces an NCAA rating of 202.0, the single-season record. Nick Foles' perfect NFL game of 22 of 28 for 406 yards and seven touchdowns scores 282.9 under this formula against 158.3 under the NFL one, which is the clearest possible demonstration that the two scales measure on different rulers.
Strengths & Limits Of This Model
Where this engine is strong
- Implements the college formula correctly, uncapped, rather than applying NFL-style clamping.
- Computes the NFL rating from the same line so the divergence between the two scales is visible rather than asserted.
- Breaks the rating into its four weighted terms and prices each per attempt.
- Refuses to publish a false conversion factor between the two systems.
Where it stops
- Cannot incorporate rushing, which limits it for dual-threat quarterbacks.
- Does not adjust for strength of schedule.
- Does not compute Total QBR, which is proprietary.
Practical Use Cases
Making sense of a college quarterback's quoted rating
A figure above 158.3 is not an error and not an NFL number. Seeing both computed from the same line makes the difference immediate.
Comparing a prospect's college numbers to professional expectations
Scouts routinely see both figures. Knowing that no exact conversion exists is more useful than any conversion table.
Understanding what the college formula rewards
The per-attempt exchange rates — a touchdown worth about 39 yards, an interception costing about 24 — reveal the formula's priorities far better than the final number does.
Checking a season stat line by hand
The formula is simple arithmetic with four weights, so a published rating can be verified directly from a box score.
Methodology & Editorial Standards
The page implements the NCAA passing-efficiency formula: (8.4 × passing yards + 330 × touchdown passes + 100 × completions − 200 × interceptions) divided by pass attempts. No caps or floors are applied, because the formula specifies none, which is the structural difference from the NFL system and the reason college ratings can exceed 200 or in principle go negative. The NFL rating is computed from the identical inputs and displayed alongside solely to demonstrate that the two scales are not comparable; no conversion factor is published, because the NFL formula's component clamping makes any reverse mapping ambiguous. Per-attempt marginal values for each term are derived from the user's own attempt volume so the formula's implicit exchange rates — a touchdown worth roughly 39 yards, an interception costing roughly 24 — are explicit. ESPN's Total QBR is described and deliberately not computed.
Computation runs in IEEE-754 double precision at full internal precision; rounding to two decimal places occurs strictly at the display layer, so no cumulative drift enters the result. All monetary outputs use accounting presentation — grouped thousands, two decimals, negatives in parentheses — so figures can be transcribed directly into a model or working paper. Division-by-zero and out-of-domain inputs return an em-dash rather than a misleading number.
This engine was reconciled against an independent reference implementation and hand-verified for the worked example above before release. Our full five-stage review process is published on the About Us page.
Disclaimer. This calculator is provided for informational and modelling purposes only and does not constitute financial, tax, legal, medical, or engineering advice. Verify all figures with a qualified professional before acting on them.
Passer Rating Calculator — 20 Expert FAQs
20 analyst-written answers to the questions practitioners actually ask — optimised for voice and answer-engine retrieval.
What is the NCAA passer rating formula?
(8.4 × passing yards + 330 × touchdowns + 100 × completions − 200 × interceptions) divided by attempts. It is a linear point system with fixed weights, and unlike the NFL formula it has no caps on any term.
Why can a college passer rating be over 200?
Because nothing stops it. The NCAA formula has no component caps, so more yards and touchdowns keep pushing the number up indefinitely. The NFL formula clamps each of its four components at 2.375, which is precisely what creates its 158.3 ceiling. The college record is Joe Burrow's 202.0 in 2019.
Is college passer rating the same as NFL passer rating?
No. They share a name and their five inputs and nothing else. The same passing line can produce 282.9 in the college formula and 158.3 in the NFL one. Treating a college figure as though it were on the NFL scale is one of the most common errors in football statistics.
Can you convert between NCAA and NFL passer rating?
Not exactly, and you should distrust tables that claim to. Because the NFL formula caps each component, very different lines can produce identical NFL ratings, which makes any reverse mapping ambiguous. As a loose orientation an NCAA 150 is roughly an NFL 90 to 95, but the relationship is not reliable.
What is a good NCAA passer rating?
FBS average sits near 125. A rating of 140 to 170 is a good to very good season, above 170 is elite and usually in the Heisman conversation, and the single-season record is about 202. These reference points bear no relation to the NFL scale's.
Can an NCAA passer rating be negative?
Yes, in principle. With no floor, enough interceptions relative to completions, yards and touchdowns will drive the rating below zero. In practice it essentially never happens over a meaningful sample, because it requires historically bad play, but the arithmetic permits it.
Why does the college formula weight touchdowns at 330?
It was chosen, not measured. At that weighting a touchdown is worth about 39 passing yards and an interception costs about 24. Those exchange rates are the formula's real content, and like the NFL formula's equal weighting of its four components, they encode a judgement about value rather than an empirical finding.
Does the NCAA formula include rushing?
No, and the omission bites harder in college than in the NFL. Option and spread offences make the quarterback a primary runner, so a dual-threat college quarterback can have enormous value that this formula cannot see at all.
What is ESPN's Total QBR and how does it fit in?
It is a third statistic on a third scale: proprietary, 0 to 100, with about 50 as average. It incorporates rushing, sacks, fumbles, game situation and opponent strength, and ESPN has never published the weights, so it cannot be computed from a box score. A quick rule: 0 to 100 means QBR, a maximum of 158.3 means the NFL formula, and anything above 200 means this one.
Which rating is better for evaluating a quarterback?
Neither, on its own. Both see only the passing line and ignore rushing, sacks, pressure, game situation and opponent quality. The NFL version is bounded and comparable within its own era; the college version is unbounded and rewards volume. Read the underlying rates — completion percentage, yards per attempt, touchdown and interception rates — which are what both formulas are arguing about.
Is this passer rating calculator free to use?
Yes. It is free, requires no account, and has no usage limits. ApexConverter is funded by contextual advertising, never by selling user data.
Is my data sent to a server?
No. The engine runs as Vanilla JavaScript inside your browser under our Zero-Server Client-Side Execution model. Your figures are computed locally and are never transmitted, logged, or stored.
How accurate is this calculator?
It applies the standard closed-form formula in IEEE-754 double precision, rounding only at the display layer. The engine is reconciled against an independent reference implementation before release.
Does it work on mobile?
Yes. The interface is mobile-first with numeric keypad hints and is tested down to a 320-pixel viewport with no horizontal scrolling.
Can I use it offline?
Largely, yes. Because computation is client-side, the page continues to calculate without a network connection once it has loaded.
Which currency does it use?
Amounts display in US$ accounting format, but the underlying mathematics is currency-agnostic. The result is identical in any currency, so simply read the figures in your own.
Why does a result show an em-dash?
An em-dash indicates the calculation is not defined for the inputs given — typically a division by zero or a value outside the valid domain. We show a dash rather than a misleading number.
How do I report an error?
Email apexconverter.praxiscalc@gmail.com with the tool URL, your exact inputs, the output received and the output you expected. Verified mathematical errors are patched within 72 hours.
Where can I find related passer rating calculator tools? (1)
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Where can I find related passer rating calculator tools? (2)
Use the Related Engines panel on this page, or open the category hub for all 50 tools.