Skip to content

Player stats & fantasy

NFL Passer Rating Calculator

Passer rating is four separate calculations averaged together, each capped at 2.375, then scaled — which is why it tops out at 158.3 rather than 100. This computes each component so you can see which part of the line is carrying the number.

—passer rating

The four components, each capped at 2.375.
ComponentRawCappedFormulaAt the cap?

Why the maximum is 158.3

Each of four components is capped at 2.375. Four maxed components sum to 9.5; divide by six and multiply by 100 and you get 158.33. The odd ceiling is an artefact of a formula designed in 1973 to place an average season at roughly 66.7, not a deliberate choice of scale.

a = ((Comp ÷ Att) − 0.3) × 5 b = ((Yds ÷ Att) − 3) × 0.25 c = (TD ÷ Att) × 20 d = 2.375 − ((INT ÷ Att) × 25) each capped to the range 0 … 2.375 rating = ((a + b + c + d) ÷ 6) × 100

What it misses

Sacks, rushing and fumbles are entirely absent, so a quarterback whose value is in his legs is undersold and one who takes twelve sacks a game is not penalised at all. Interceptions are also the only negative input, which is why a clean-but-conservative passer rates well and a productive gambler does not. This is why ESPN's QBR and the ANY/A family exist alongside it.

Questions people ask about this

What is a perfect passer rating?

158.3. It comes from all four components hitting their 2.375 cap: summing to 9.5, dividing by six and multiplying by 100 gives 158.33. Reaching it requires roughly a 77.5% completion rate, 12.5 yards per attempt, a touchdown on 11.875% of attempts and no interceptions.

How is NFL passer rating calculated?

Four components — completion rate, yards per attempt, touchdown rate and interception rate — are each converted to a scale capped between 0 and 2.375, then summed, divided by six and multiplied by 100. The odd ceiling of 158.3 is an artefact of a 1973 formula designed to put an average season near 66.7.

What is a good passer rating?

Above 100 is a strong season and above 110 is elite. Around 85–95 is a solid starter, and below 75 usually means a quarterback in trouble. The scale has drifted upward over decades as passing efficiency improved league-wide, so a 90 in 1985 was considerably better than a 90 today.

Where these numbers come from

Rates on this page were last checked against the published price lists on . Grading companies change fees and pause tiers without notice — confirm the total on the submission form before you pay.