GameCalc

NFL Passer Rating Calculator

The official NFL passer rating formula, broken down.

Completions

Attempts

Passing Yards

Touchdowns

Interceptions

Passer Rating

92.6

Completion % (a): 1.357
Yards/Att (b): 1.25
TD/Att (c): 1.143
INT/Att (d): 1.804

What you entered

Completions: 200Attempts: 350Yards: 2800Touchdowns: 20Interceptions: 8

1
Component a (completion %)
((200/350 x 100) - 30) / 20 = 1.3571, clamped [0, 2.375]= 1.3571
2
Component b (yards/attempt)
((2,800/350) - 3) / 4 = 1.25, clamped [0, 2.375]= 1.25
3
Component c (TD/attempt)
(20/350) x 20 = 1.1429, clamped [0, 2.375]= 1.1429
4
Component d (INT/attempt)
2.375 - (8/350) x 25 = 1.8036, clamped [0, 2.375]= 1.8036
5
Passer rating
((1.3571 + 1.25 + 1.1429 + 1.8036) / 6) x 100= 92.5595

Result

Passer Rating: 92.6

NFL passer rating for common single game stat lines

Every row runs the official 1973 NFL formula on a stat line you would see in a box score. The four components are completion percentage, yards per attempt, touchdown rate, and interception rate, each capped at 2.375 before they are averaged.

Comp / Att	Yards	TD	INT	Passer rating
12 / 25	120	0	3	22.5
15 / 30	150	0	2	36.8
18 / 30	200	1	1	77.1
28 / 45	320	2	2	79.9
21 / 33	240	1	0	95.5
24 / 34	280	2	1	102.6
20 / 30	250	2	0	114.6
22 / 30	285	3	1	122.2
25 / 35	300	3	0	125.9
30 / 40	400	4	0	139.6
20 / 24	300	3	0	158.3

The 158.3 line is the mathematical ceiling: it needs at least 77.5 percent completions, 12.5 yards per attempt, an 11.875 percent touchdown rate, and no interceptions, which is why the bottom row clears every cap at once. The scale is not linear, so a 6 point gain near 30 is not worth the same as 6 points near 130. The formula also ignores sacks, fumbles, rushing, and opponent quality, and it takes season totals just as readily as a single game.

Four components, each clamped

The NFL passer rating combines four factors — completion percentage, yards per attempt, touchdown percentage, and interception percentage — each scaled and clamped to a 0–2.375 range, then averaged and multiplied by 100 to produce a 0–158.3 scale.

Why 158.3 is the max

The maximum of 158.3 (not a round number) is an artifact of the formula's design from 1973 — it wasn't intended as a 'perfect' score, just the mathematical ceiling when all four components hit their maximum of 2.375.

Frequently asked questions

A QB threw 22/30 for 285 yards, 3 TDs, and 1 INT — what's his passer rating?

That works out to 122.2, which is an excellent game. The four components come in at 2.167 for completion percentage, 1.625 for yards per attempt, 2.0 for touchdown rate, and 1.542 for interception rate — none of them hit the 2.375 cap. For reference, a rating above 100 is considered very good, and the all-time season record is Aaron Rodgers' 122.5 in 2011, so this single game is right at record-season pace.

How is NFL passer rating different from QBR?

NFL passer rating uses only passing stats (completions, yards, TDs, INTs) in a fixed formula. ESPN's QBR incorporates rushing, sacks, fumbles, game situation, and opponent quality on a 0-100 scale — it's more comprehensive but proprietary.

Can a quarterback get a perfect 158.3 rating?

Yes, but it requires extreme stat lines — at least 77.5% completion rate, 12.5+ yards per attempt, 11.875%+ TD rate, and 0% INT rate. It's happened in individual games but never over a full season.

Why do some analysts dislike passer rating?

It ignores sacks, fumbles, rushing, game context, and opponent strength. A QB who throws safe 3-yard checkdowns under no pressure can post a high rating while contributing less to winning than a QB who takes risks in big moments.