NFL Passer Rating Calculator
NFL passer rating compresses a quarterback's passing game into one number drawn from just five box-score figures: completions, attempts, passing yards, touchdowns and interceptions. The National Football League formula works by turning four of those relationships into component scores, one each from completion percentage, yards per attempt, touchdown percentage and interception percentage. Each component is deliberately capped between 0 and 2.375 so that no single category can dominate, the four scores are added together, divided by six and multiplied by 100. The result always falls between 0 and a perfect 158.3, with anything near 100 marking a strong performance and ratings above 120 indicating an outstanding day. This calculator applies that official formula exactly: enter a passer's line and it returns the rating along with each component so you can see what helped or hurt. It is genuinely useful for comparing quarterbacks across different games, sanity-checking a printed stat line, or simply understanding how the rating number shown on the broadcast was actually produced from the box score. Every figure here is computed deterministically from the published NFL formula shown below, with a worked example that reconciles exactly to the calculator so you can follow each step from the raw stats to the final rating.
Passer rating averages four capped components from completion, yardage, touchdown and interception rates, then scales to 100: rating = (a + b + c + d) / 6 x 100. A line of 24 of 35 for 300 yards, 3 touchdowns and 1 interception gives a rating of 111.61.
NFL passer rating formula
a = ((COMP / ATT) - 0.3) x 5
b = ((YDS / ATT) - 3) x 0.25
c = (TD / ATT) x 20
d = 2.375 - ((INT / ATT) x 25)
each of a, b, c, d is capped to the range 0 to 2.375
Rating = ((a + b + c + d) / 6) x 100
The four components measure accuracy, yards per attempt, scoring rate and ball security. Capping each between 0 and 2.375 keeps the rating bounded between 0 and 158.3.
Worked example
A quarterback completes 24 of 35 passes for 300 yards, with 3 touchdowns and 1 interception.
- a = ((24 / 35) - 0.3) x 5 = (0.6857 - 0.3) x 5 = 1.9286.
- b = ((300 / 35) - 3) x 0.25 = (8.5714 - 3) x 0.25 = 1.3929.
- c = (3 / 35) x 20 = 1.7143.
- d = 2.375 - ((1 / 35) x 25) = 2.375 - 0.7143 = 1.6607.
- Rating = ((1.9286 + 1.3929 + 1.7143 + 1.6607) / 6) x 100 = 111.61.
The passer rating is 111.61. These are the calculator's default inputs, so the result above matches the widget exactly.
Passer rating calculator: frequently asked questions
What is NFL passer rating?
Passer rating is a single number that summarises a quarterback's passing performance from five box-score inputs: completions, attempts, passing yards, touchdowns and interceptions. The National Football League formula produces a value between 0 and 158.3, where higher is better. A rating around 100 is considered very good and 158.3 is a perfect rating.
How is the NFL passer rating calculated?
The formula computes four component scores, one each from completion percentage, yards per attempt, touchdown percentage and interception percentage. Each component is capped between 0 and 2.375. The four are added, divided by six and multiplied by 100. Because of the caps, the maximum possible rating is 158.3 and the minimum is 0.
What is a perfect passer rating?
A perfect rating is 158.3. It requires every one of the four components to hit its maximum of 2.375, which means a high completion percentage (at least 77.5 percent), at least 12.5 yards per attempt, a touchdown on at least 11.875 percent of attempts and zero interceptions. Very few games in NFL history have reached it.
How is passer rating different from QBR?
NFL passer rating uses only five traditional passing statistics and treats every play the same way. Total quarterback rating (QBR), published separately by a sports broadcaster, is a proprietary metric on a 0 to 100 scale that also weights the game situation and includes rushing and sacks. This calculator uses the official NFL passer rating formula only.
Does this use the college formula?
No. College football uses a different passer efficiency formula with different coefficients and no caps, so its values are not comparable. This calculator implements the National Football League formula, which caps each of the four components between 0 and 2.375 and produces a maximum of 158.3.
Official sources
- Public health and sport participation context: US Centers for Disease Control and Prevention (CDC). As at 25 June 2026.
Reviewed by the CalculatorHub team, edited by James Graham, 25 June 2026. See our methodology. This is general information, not financial, tax, legal or investment advice.