Passer Rating Calculator (NFL QB Rating)
Enter a passing line to get the NFL passer rating (0 to 158.3) and the four components that make it up. It answers what the NFL passer rating is for a given passing line and what a perfect 158.3 takes.
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Formula
The NFL passer rating, with C completions, A attempts, Y yards, TD touchdowns and INT interceptions:
a = (C / A - 0.3) x 5b = (Y / A - 3) x 0.25c = (TD / A) x 20d = 2.375 - (INT / A) x 25- Each of a, b, c, d is limited to the range 0 to 2.375.
Rating = (a + b + c + d) / 6 x 100
The maximum is 158.3. College passer efficiency and ESPN Total QBR are different measures and are not included.
Worked example
25 of 35, 300 yards, 3 TD, 1 INT.
- a = (0.7143 - 0.3) x 5 = 2.071
- b = (8.5714 - 3) x 0.25 = 1.393
- c = (3 / 35) x 20 = 1.714
- d = 2.375 - (1 / 35) x 25 = 1.661
- Rating = 6.839 / 6 x 100 = 114.0
When to use it
Use it for a game, season or career line. The rating combines completion percentage, yards per attempt, touchdown rate and interception rate, each limited to a maximum of 2.375.
Typical values (rules of thumb)
- 158.3 is the perfect rating.
- 100 or more is excellent, 90 is good, 80 is about average in recent seasons and below 70 is poor.
- A perfect score needs at least 77.5% completions, 12.5 yards per attempt, a touchdown on 11.875% of attempts or more and no interceptions.
Common mistakes
- Treating the rating as total quarterback value. It ignores rushing, sacks and fumbles.
- Mixing it up with ESPN QBR, which is a different model, or college passer efficiency, which uses another formula.
- Entering completions greater than attempts.
How it differs from nearby tools
The points per game calculator and the field goal percentage calculator are for basketball. This page is for NFL passing only, and the percentage calculator can do a simple completion rate by itself.
Frequently asked questions
What is the NFL passer rating formula?
With C completions, A attempts, Y yards, TD and INT: a = (C/A - 0.3) x 5, b = (Y/A - 3) x 0.25, c = (TD/A) x 20, d = 2.375 - (INT/A) x 25. Each is clamped between 0 and 2.375, and rating = (a + b + c + d) / 6 x 100.
What is a perfect passer rating?
158.3, reached when all four components hit the 2.375 cap: 9.5 / 6 x 100. For example 20 of 20 for 400 yards and 5 touchdowns with no interceptions. The lowest possible rating is 0.
How do you work out a rating by hand?
For 25 of 35, 300 yards, 3 TD, 1 INT: a = 2.071, b = 1.393, c = 1.714, d = 1.661. The sum is 6.839, and 6.839 / 6 x 100 = 114.0.
Is this the same as ESPN's Total QBR?
No. This is the NFL passer rating, a fixed formula on five counting stats. Total QBR is a separate ESPN metric that uses play-by-play context and is not calculated here. College passing efficiency uses a different formula and is also not included.
What passer rating is a 35 for 35 game?
Completing 35 of 35 for 300 yards with 3 touchdowns and no interceptions caps the completion and interception parts at 2.375, so the rating is 131.0.
What is a good passer rating?
As a rule of thumb, 90 is good, 100 or more is excellent and below 70 is poor. A line of 20 of 35 for 200 yards, 1 touchdown and 2 interceptions rates 59.2.
What passer rating is 25 of 35 for 300 yards, 3 TD and 1 INT?
The four parts are 2.071, 1.393, 1.714 and 1.661, which sum to 6.839. The rating is 6.839 / 6 x 100 = 114.0.