The
Verified data · source: List of The Big Bang Theory episodes · auto-audited weekly.
12 rows · scroll inside the table (header and first column stay put).
| Season | Episodes | Originally released First released | Last released | Viewersrank | U.S. Viewers(millions) | 18–49rank | 18–49rating/share |
|---|---|---|---|---|---|---|---|
| 1 | 17 | September 24, 2007 (2007-09-24) | May 19, 2008 (2008-05-19) | 68[1] | 8.34 | 46[2] | 3.3/8 |
| 2 | 23 | September 22, 2008 (2008-09-22) | May 11, 2009 (2009-05-11) | 40[3] | 10.07 | 22 | 3.8 |
| 3 | 23 | September 21, 2009 (2009-09-21) | May 24, 2010 (2010-05-24) | 12 | 14.22 | 5[4] | 5.3/13 |
| 4 | 24 | September 23, 2010 (2010-09-23) | May 19, 2011 (2011-05-19) | 13 | 13.21 | 7[5] | 4.4/13 |
| 5 | 24 | September 22, 2011 (2011-09-22) | May 10, 2012 (2012-05-10) | 8 | 15.82 | 6[6] | 5.5/17 |
| 6 | 24 | September 27, 2012 (2012-09-27) | May 16, 2013 (2013-05-16) | 3 | 18.68 | 2[7] | 6.2/19 |
| 7 | 24 | September 26, 2013 (2013-09-26) | May 15, 2014 (2014-05-15) | 2 | 19.96 | 2[8] | 6.2/20 |
| 8 | 24 | September 22, 2014 (2014-09-22) | May 7, 2015 (2015-05-07) | 2 | 19.05 | 4[9] | 5.6/17 |
| 9 | 24 | September 21, 2015 (2015-09-21) | May 12, 2016 (2016-05-12) | 2 | 20.36 | 3[10] | 5.8/19 |
| 10 | 24 | September 19, 2016 (2016-09-19) | May 11, 2017 (2017-05-11) | 2 | 18.99 | 3[11] | 4.9/19 |
| 11 | 24 | September 25, 2017 (2017-09-25) | May 10, 2018 (2018-05-10) | 1 | 18.63 | 5[12] | 4.4 |
| 12 | 24 | September 24, 2018 (2018-09-24) | May 16, 2019 (2019-05-16) | 2 | 17.31 | 6[13] | 3.6 |