The cast dressed up for a formal dinner party during season 6.
The following is a list of episodes of the CBS sitcom "The Big Bang Theory " chronologically.
As of May 16, 2019, 279 episodes aired in 12 seasons.
Series Summary [ ]
Season
Episodes
Season Premiere
Season Finale
1
17
September 24, 2007
May 19, 2008
2
23
September 22, 2008
May 11, 2009
3
23
September 21, 2009
May 24, 2010
4
24
September 23, 2010
May 19, 2011
5
23
September 22, 2011
May 10, 2012
6
24
September 27, 2012
May 16, 2013
7
23
September 26, 2013
May 15, 2014
8
23
September 22, 2014
May 7, 2015
9
24
September 21, 2015
May 12, 2016
10
24
September 19, 2016
May 11, 2017
11
24
September 25, 2017
May 10, 2018
12
24
September 24, 2018
May 16, 2019
Season 1: 2007–2008 [ ]
Main article: Season 1
Title
Original Airdate
Series Ep#
Pilot
September 24, 2007
1
The Big Bran Hypothesis
October 1, 2007
2
The Fuzzy Boots Corollary
October 8, 2007
3
The Luminous Fish Effect
October 15, 2007
4
The Hamburger Postulate
October 22, 2007
5
The Middle-Earth Paradigm
October 29, 2007
6
The Dumpling Paradox
November 5, 2007
7
The Grasshopper Experiment
November 12, 2007
8
The Cooper-Hofstadter Polarization
March 17, 2008
9
The Loobenfeld Decay
March 24, 2008
10
The Pancake Batter Anomaly
March 31, 2008
11
The Jerusalem Duality
April 14, 2008
12
The Bat Jar Conjecture
April 21, 2008
13
The Nerdvana Annihilation
April 28, 2008
14
The Porkchop Indeterminacy
May 5, 2008
15
The Peanut Reaction
May 12, 2008
16
The Tangerine Factor
May 19, 2008
17
Season 2: 2008–2009 [ ]
Main article: Season 2
Title
Original Airdate
Series Ep#
The Bad Fish Paradigm
September 22, 2008
18
The Codpiece Topology
September 29, 2008
19
The Barbarian Sublimation
October 6, 2008
20
The Griffin Equivalency
October 13, 2008
21
The Euclid Alternative
October 20, 2008
22
The Cooper-Nowitzki Theorem
November 3, 2008
23
The Panty Piñata Polarization
November 10, 2008
24
The Lizard-Spock Expansion
November 17, 2008
25
The White Asparagus Triangulation
November 24, 2008
26
The Vartabedian Conundrum
December 8, 2008
27
The Bath Item Gift Hypothesis
December 15, 2008
28
The Killer Robot Instability
January 12, 2009
29
The Friendship Algorithm
January 19, 2009
30
The Financial Permeability
February 2, 2009
31
The Maternal Capacitance
February 9, 2009
32
The Cushion Saturation
March 2, 2009
33
The Terminator Decoupling
March 9, 2009
34
The Work Song Nanocluster
March 16, 2009
35
The Dead Hooker Juxtaposition
March 30, 2009
36
The Hofstadter Isotope
April 13, 2009
37
The Vegas Renormalization
April 27, 2009
38
The Classified Materials Turbulence
May 4, 2009
39
The Monopolar Expedition
May 11, 2009
40
Season 3: 2009–2010 [ ]
Main article: Season 3
Title
Original Airdate
Series Ep#
The Electric Can Opener Fluctuation
September 21, 2009
41
The Jiminy Conjecture
September 28, 2009
42
The Gothowitz Deviation
October 5, 2009
43
The Pirate Solution
October 12, 2009
44
The Creepy Candy Coating Corollary
October 19, 2009
45
The Cornhusker Vortex
November 2, 2009
46
The Guitarist Amplification
November 9, 2009
47
The Adhesive Duck Deficiency
November 16, 2009
48
The Vengeance Formulation
November 23, 2009
49
The Gorilla Experiment
December 7, 2009
50
The Maternal Congruence
December 14, 2009
51
The Psychic Vortex
January 11, 2010
52
The Bozeman Reaction
January 18, 2010
53
The Einstein Approximation
February 1, 2010
54
The Large Hadron Collision
February 8, 2010
55
The Excelsior Acquisition
March 1, 2010
56
The Precious Fragmentation
March 8, 2010
57
The Pants Alternative
March 22, 2010
58
The Wheaton Recurrence
April 12, 2010
59
The Spaghetti Catalyst
May 3, 2010
60
The Plimpton Stimulation
May 10, 2010
61
The Staircase Implementation
May 17, 2010
62
The Lunar Excitation
May 24, 2010
63
Season 4: 2010–2011 [ ]
Main article: Season 4
Title
Original Airdate
Series Ep#
The Robotic Manipulation
September 23, 2010
64
The Cruciferous Vegetable Amplification
September 30, 2010
65
The Zazzy Substitution
October 7, 2010
66
The Hot Troll Deviation
October 14, 2010
67
The Desperation Emanation
October 21, 2010
68
The Irish Pub Formulation
October 28, 2010
69
The Apology Insufficiency
November 4, 2010
70
The 21-Second Excitation
November 11, 2010
71
The Boyfriend Complexity
November 18, 2010
72
The Alien Parasite Hypothesis
December 9, 2010
73
The Justice League Recombination
December 16, 2010
74
The Bus Pants Utilization
January 6, 2011
75
The Love Car Displacement
January 20, 2011
76
The Thespian Catalyst
February 3, 2011
77
The Benefactor Factor
February 10, 2011
78
The Cohabitation Formulation
February 17, 2011
79
The Toast Derivation
February 24, 2011
80
The Prestidigitation Approximation
March 10, 2011
81
The Zarnecki Incursion
March 31, 2011
82
The Herb Garden Germination
April 7, 2011
83
The Agreement Dissection
April 28, 2011
84
The Wildebeest Implementation
May 5, 2011
85
The Engagement Reaction
May 12, 2011
86
The Roommate Transmogrification
May 19, 2011
87
Season 5: 2011–2012 [ ]
Main article: Season 5
Title
Original Airdate
Series Ep#
The Skank Reflex Analysis
September 22, 2011
88
The Infestation Hypothesis
September 22, 2011
89
The Pulled Groin Extrapolation
September 29, 2011
90
The Wiggly Finger Catalyst
October 6, 2011
91
The Russian Rocket Reaction
October 13, 2011
92
The Rhinitis Revelation
October 20, 2011
93
The Good Guy Fluctuation
October 27, 2011
94
The Isolation Permutation
November 3, 2011
95
The Ornithophobia Diffusion
November 10, 2011
96
The Flaming Spittoon Acquisition
November 17, 2011
97
The Speckerman Recurrence
December 8, 2011
98
The Shiny Trinket Maneuver
January 12, 2012
99
The Recombination Hypothesis
January 19, 2012
100
The Beta Test Initiation
January 26, 2012
101
The Friendship Contraction
February 2, 2012
102
The Vacation Solution
February 9, 2012
103
The Rothman Disintegration
February 16, 2012
104
The Werewolf Transformation
February 23, 2012
105
The Weekend Vortex
March 8, 2012
106
The Transporter Malfunction
March 29, 2012
107
The Hawking Excitation
April 5, 2012
108
The Stag Convergence
April 26, 2012
109
The Launch Acceleration
May 3, 2012
110
The Countdown Reflection
May 10, 2012
111
Season 6: 2012–2013 [ ]
Main article: Season 6
Title
Original Airdate
Series Ep#
The Date Night Variable
September 27, 2012
112
The Decoupling Fluctuation
October 4, 2012
113
The Higgs Boson Observation
October 11, 2012
114
The Re-Entry Minimization
October 18, 2012
115
The Holographic Excitation
October 25, 2012
116
The Extract Obliteration
November 1, 2012
117
The Habitation Configuration
November 8, 2012
118
The 43 Peculiarity
November 15, 2012
119
The Parking Spot Escalation
November 29, 2012
120
The Fish Guts Displacement
December 6, 2012
121
The Santa Simulation
December 13, 2012
122
The Egg Salad Equivalency
January 3, 2013
123
The Bakersfield Expedition
January 10, 2013
124
The Cooper/Kripke Inversion
January 31, 2013
125
The Spoiler Alert Segmentation
February 7, 2013
126
The Tangible Affection Proof
February 14, 2013
127
The Monster Isolation
February 21, 2013
128
The Contractual Obligation Implementation
March 7, 2013
129
The Closet Reconfiguration
March 14, 2013
130
The Tenure Turbulence
April 4, 2013
131
The Closure Alternative
April 25, 2013
132
The Proton Resurgence
May 2, 2013
133
The Love Spell Potential
May 9, 2013
134
The Bon Voyage Reaction
May 16, 2013
135
Season 7: 2013–2014 [ ]
Main article: Season 7
Title
Original Airdate
Series Ep#
The Hofstadter Insufficiency
September 26, 2013
136
The Deception Verification
September 26, 2013
137
The Scavenger Vortex
October 3, 2013
138
The Raiders Minimization
October 10, 2013
139
The Workplace Proximity
October 17, 2013
140
The Romance Resonance
October 24, 2013
141
The Proton Displacement
November 7, 2013
142
The Itchy Brain Simulation
November 14, 2013
143
The Thanksgiving Decoupling
November 21, 2013
144
The Discovery Dissipation
December 5, 2013
145
The Cooper Extraction
December 12, 2013
146
The Hesitation Ramification
January 2, 2014
147
The Occupation Recalibration
January 9, 2014
148
The Convention Conundrum
January 30, 2014
149
The Locomotive Manipulation
February 6, 2014
150
The Table Polarization
February 27, 2014
151
The Friendship Turbulence
March 6, 2014
152
The Mommy Observation
March 13, 2014
153
The Indecision Amalgamation
April 3, 2014
154
The Relationship Diremption
April 10, 2014
155
The Anything Can Happen Recurrence
April 24, 2014
156
The Proton Transmogrification
May 1, 2014
157
The Gorilla Dissolution
May 8, 2014
158
The Status Quo Combustion
May 15, 2014
159
Season 8: 2014–2015 [ ]
Main article: Season 8
Title
Original Airdate
Series Ep#
The Locomotion Interruption
September 22, 2014
160
The Junior Professor Solution
September 22, 2014
161
The First Pitch Insufficiency
September 29, 2014
162
The Hook-up Reverberation
October 6, 2014
163
The Focus Attenuation
October 13, 2014
164
The Expedition Approximation
October 20, 2014
165
The Misinterpretation Agitation
October 30, 2014
166
The Prom Equivalency
November 6, 2014
167
The Septum Deviation
November 13, 2014
168
The Champagne Reflection
November 20, 2014
169
The Clean Room Infiltration
December 11, 2014
170
The Space Probe Disintegration
January 8, 2015
171
The Anxiety Optimization
January 29, 2015
172
The Troll Manifestation
February 5, 2015
173
The Comic Book Store Regeneration
February 19, 2015
174
The Intimacy Acceleration
February 26, 2015
175
The Colonization Application
March 5, 2015
176
The Leftover Thermalization
March 12, 2015
177
The Skywalker Incursion
April 2, 2015
178
The Fortification Implementation
April 9, 2015
179
The Communication Deterioration
April 16, 2015
180
The Graduation Transmission
April 23, 2015
181
The Maternal Combustion
April 30, 2015
182
The Commitment Determination
May 7, 2015
183
Season 9: 2015–2016 [ ]
Main article: Season 9
Title
Original Airdate
Series Ep#
The Matrimonial Momentum
September 21, 2015
184
The Separation Oscillation
September 28, 2015
185
The Bachelor Party Corrosion
October 5, 2015
186
The 2003 Approximation
October 12, 2015
187
The Perspiration Implementation
October 19, 2015
188
The Helium Insufficiency
October 26, 2015
189
The Spock Resonance
November 5, 2015
190
The Mystery Date Observation
November 12, 2015
191
The Platonic Permutation
November 19, 2015
192
The Earworm Reverberation
December 10, 2015
193
The Opening Night Excitation
December 17, 2015
194
The Sales Call Sublimation
January 7, 2016
195
The Empathy Optimization
January 14, 2016
196
The Meemaw Materialization
February 4, 2016
197
The Valentino Submergence
February 11, 2016
198
The Positive Negative Reaction
February 18, 2016
199
The Celebration Experimentation
February 25, 2016
200
The Application Deterioration
March 10, 2016
201
The Solder Excursion Diversion
March 31, 2016
202
The Big Bear Precipitation
April 7, 2016
203
The Viewing Party Combustion
April 21, 2016
204
The Fermentation Bifurcation
April 28, 2016
205
The Line Substitution Solution
May 5, 2016
206
The Convergence Convergence
May 12, 2016
207
Season 10: 2016–2017 [ ]
Main article: Season 10
Title
Original Airdate
Series Ep#
The Conjugal Conjecture
September 19, 2016
208
The Military Miniaturization
September 26, 2016
209
The Dependence Transcendence
October 3, 2016
210
The Cohabitation Experimentation
October 10, 2016
211
The Hot Tub Contamination
October 17, 2016
212
The Fetal Kick Catalyst
October 27, 2016
213
The Veracity Elasticity
November 3, 2016
214
The Brain Bowl Incubation
November 10, 2016
215
The Geology Elevation
November 17, 2016
216
The Property Division Collision
December 1, 2016
217
The Birthday Synchronicity
December 15, 2016
218
The Holiday Summation
January 5, 2017
219
The Romance Recalibration
January 19, 2017
220
The Emotion Detection Automation
February 2, 2017
221
The Locomotion Reverberation
February 9, 2017
222
The Allowance Evaporation
February 16, 2017
223
The Comic-Con Conundrum
February 23, 2017
224
The Escape Hatch Identification
March 9, 2017
225
The Collaboration Fluctuation
March 30, 2017
226
The Recollection Dissipation
April 6, 2017
227
The Separation Agitation
April 13, 2017
228
The Cognition Regeneration
April 27, 2017
229
The Gyroscopic Collapse
May 4, 2017
230
The Long Distance Dissonance
May 11, 2017
231
Season 11: 2017-2018 [ ]
Main article: Season 11
Title
Original Airdate
Series Ep#
The Proposal Proposal
September 25, 2017
232
The Retraction Reaction
October 2, 2017
233
The Relaxation Integration
October 9, 2017
234
The Explosion Implosion
October 16, 2017
235
The Collaboration Contamination
October 23, 2017
236
The Proton Regeneration
November 2, 2017
237
The Geology Methodology
November 9, 2017
238
The Tesla Recoil
November 16, 2017
239
The Bitcoin Entanglement
November 30, 2017
240
The Confidence Erosion
December 7, 2017
241
The Celebration Reverberation
December 14, 2017
242
The Matrimonial Metric
January 4, 2018
243
The Solo Oscillation
January 11, 2018
244
The Separation Triangulation
January 18, 2018
245
The Novelization Correlation
February 1, 2018
246
The Neonatal Nomenclature
March 1, 2018
247
The Athenaeum Allocation
March 8, 2018
248
The Gates Excitation
March 29, 2018
249
The Tenant Disassociation
April 5, 2018
250
The Reclusive Potential
April 12, 2018
251
The Comet Polarization
April 19, 2018
252
The Monetary Insufficiency
April 26, 2018
253
The Sibling Realignment
May 3, 2018
254
The Bow Tie Asymmetry
May 10, 2018
255
Season 12: 2018-2019 [ ]
Main article: Season 12
Title
Original Airdate
Series Ep#
The Conjugal Configuration
September 24, 2018
256
The Wedding Gift Wormhole
October 1, 2018
257
The Procreation Calculation
October 8, 2018
258
The Tam Turbulence
October 15, 2018
259
The Planetarium Collision
October 22, 2018
260
The Imitation Perturbation
October 29, 2018
261
The Grant Allocation Derivation
November 1, 2018
262
The Consummation Deviation
November 8, 2018
263
The Citation Negation
November 15, 2018
264
The VCR Illumination
December 6, 2018
265
The Paintball Scattering
January 3, 2019
266
The Propagation Proposition
January 10, 2019
267
The Confirmation Polarization
January 17, 2019
268
The Meteorite Manifestation
January 31, 2019
269
The Donation Oscillation
February 7, 2019
270
The D & D Vortex
February 21, 2019
271
The Conference Valuation
March 7, 2019
272
The Laureate Accumulation
April 4, 2019
273
The Inspiration Deprivation
April 18, 2019
274
The Decision Reverberation
April 25, 2019
275
The Plagiarism Schism
May 2, 2019
276
The Maternal Conclusion
May 9, 2019
277
The Change Constant
May 16, 2019
278
The Stockholm Syndrome
May 16, 2019
279