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The Big Bang Theory

Episode Ratings

IMDb ratings graph for every episode of The Big Bang Theory across all 12 seasons.

2007–2019 · 12 seasons · CBS · Comedy
IMDb
8.1
940k ratings
TMDB
7.9
13k ratings
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Episode Ratings

Season-by-season heatmap · hover a cell for details

Episode ratings

Rating:MasterpieceExcellentGoodAveragePoorN/A
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
E1
8.1
8.2
8.2
8.7
8.0
7.6
7.7
7.2
6.8
7.8
7.5
7.2
E2
8.2
7.9
7.7
8.3
8.0
7.6
7.9
7.5
7.3
7.3
7.2
7.6
E3
7.6
8.7
8.1
7.9
7.6
7.9
8.7
7.0
7.7
7.2
7.0
7.2
E4
8.0
7.8
8.0
8.0
7.8
8.2
7.8
7.2
7.4
7.9
7.1
7.0
E5
7.8
8.3
8.3
7.6
8.0
8.0
7.6
7.5
7.4
7.4
7.3
6.8
E6
8.3
8.1
7.4
8.0
7.5
7.8
8.4
7.2
7.2
7.4
7.2
8.2
E7
8.0
8.6
7.7
8.0
8.5
7.6
7.7
7.7
7.9
7.9
7.4
7.3
E8
8.1
8.0
8.9
8.1
7.6
8.4
7.5
8.0
7.9
8.0
7.1
7.3
E9
7.9
8.0
8.3
8.4
8.1
8.2
8.8
7.5
7.7
7.4
7.7
7.2
E10
8.0
7.6
8.4
7.6
7.9
8.0
7.6
7.0
8.3
7.3
7.3
7.5
E11
8.2
9.1
8.3
8.6
7.3
7.8
8.1
7.4
9.0
7.6
7.1
7.3
E12
7.8
7.8
8.2
7.5
7.6
8.4
7.4
7.2
7.4
7.3
7.5
7.1
E13
8.2
7.9
8.0
8.2
8.1
8.4
7.5
7.4
7.4
6.9
7.2
7.1
E14
8.0
7.9
8.4
7.7
8.2
7.7
8.0
8.0
7.5
7.2
7.2
7.1
E15
8.2
8.8
8.0
7.7
7.7
8.2
8.2
8.1
7.5
7.3
7.5
7.4
E16
8.3
8.1
8.2
7.8
7.5
7.8
7.5
7.8
7.4
7.1
7.1
7.9
E17
8.5
8.0
8.4
7.9
7.7
7.6
7.4
7.5
7.6
7.4
6.8
7.1
E18
8.1
8.3
8.1
8.2
7.7
7.4
7.3
7.5
7.1
7.1
7.1
E19
8.1
7.8
8.0
8.1
8.1
8.1
7.5
7.4
7.1
7.2
7.0
E20
7.8
8.1
8.2
8.0
8.0
8.0
7.5
7.4
7.2
7.2
7.1
E21
8.4
8.1
8.2
8.5
8.0
7.5
7.0
7.4
7.2
7.4
7.3
E22
8.1
9.0
7.7
7.7
7.9
7.7
7.3
7.4
6.8
7.2
7.9
E23
8.2
8.6
8.0
8.1
8.1
7.8
7.5
7.4
7.2
7.7
9.0
E24
8.5
8.5
7.7
8.0
7.9
7.8
8.6
9.0
9.5
AVG
8.1
8.2
8.2
8.0
7.9
7.9
7.8
7.5
7.6
7.4
7.3
7.5

Overview

Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.

NetworkCBS
Runtime~22 min
Seasons12

The Big Bang Theory holds an IMDb rating of 8.1 from 940K votes. Across its 279 rated episodes, the highest-rated is S12E24 "Unraveling the Mystery: A Big Bang Farewell" at 9.5, and the lowest is S9E1 "The Matrimonial Momentum" at 6.8. Season 2 is the strongest, averaging 8.2 per episode. Explore the full episode ratings graph below, season by season.

Peak9.5
S12E24Unraveling the Mystery: A Big Bang Farewell
Low point6.8
S9E1The Matrimonial Momentum

Averages 7.8 across 279 rated episodes — strongest run is Season 2 at 8.2.

Average by season

Season 18.117 eps
Season 28.223 eps
Season 38.223 eps
Season 48.024 eps
Season 57.924 eps
Season 67.924 eps
Season 77.824 eps
Season 87.524 eps
Season 97.624 eps
Season 107.424 eps
Season 117.324 eps
Season 127.524 eps

Top-rated episodes

1S12E24Unraveling the Mystery: A Big Bang Farewell9.5
2S2E11The Bath Item Gift Hypothesis9.1
3S3E22The Staircase Implementation9.0
4S9E11The Opening Night Excitation9.0
5S11E24The Bow Tie Asymmetry9.0

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Frequently asked questions

How many episodes does The Big Bang Theory have?

The Big Bang Theory has 279 episodes across 12 seasons.

How many seasons does The Big Bang Theory have?

The Big Bang Theory has 12 seasons.

What is The Big Bang Theory's IMDb rating?

The Big Bang Theory holds an IMDb rating of 8.1 from 940K votes.

What is the highest-rated episode of The Big Bang Theory?

The highest-rated episode of The Big Bang Theory is S12E24 “Unraveling the Mystery: A Big Bang Farewell”, rated 9.5 on IMDb.

What is the lowest-rated episode of The Big Bang Theory?

The lowest-rated episode of The Big Bang Theory is S9E1 “The Matrimonial Momentum”, rated 6.8 on IMDb.

Which season of The Big Bang Theory is the best?

Season 2 is the highest-rated, averaging 8.2 per episode.