For episodes airing from and including August 21, 2001 to August 25, 2002, 1 point equals 1,055,000 housholds, so a rating of 3.2 equals 3.2 x 1,055,000, or 3,376,000 viewers.
For episodes airing from and including August 26, 2002 to the present, 1 point equals 1,067,000 households so a rating of 3.2 equals 3.2 x 1,067,000 or 3,414,400 viewers.
Highest Rated Buffy Episode This Season: The October 2nd season premire of "Bargaining Part 1 & Bargaing Part 2" with a 4.3 rating (4,536,500 viewers)
Lowest Rated Buffy Episodes This Season: The July 3rd 2nd repeat of "Life Serial" with a 0.8 rating (844,000 viewers)
(Air Date - Episode Title - Nielsen rating - national ranking for primetime [91/112 - 91st best rating out of 112 shows on primetime in a given week.])
December 31, 2002 - Two To Go & Grave (2nd Repeat) - 1.1 - 110/127
December 24, 2002 - Villains (2nd Repeat) - 0.9 - 103/117
September 17, 2002 - Grave (Repeat) - 1.7 - 99/119
September 10, 2002 - Two To Go (Repeat) - 1.5 - 93/110
September 10, 2002 - Villains (Repeat) - 1.7 - 88/110
September 3, 2002 - Seeing Red (Repeat) - 1.6 - 97/130
August 27, 2002 - Entropy (Repeat) - 1.5 - 101/134
August 20, 2002 - Normal Again (Repeat) - 1.3 - 113/135
August 13, 2002 - Older And Far Away (2nd Repeat) - 1.3 - 107/136
August 6, 2002 - Dead Things (2nd Repeat) - 1.3 - 113/140
July 30, 2002 - Gone (2nd Repeat) - 1.4 - 108/141
July 24, 2002 - Doublemeat Palace (2nd Repeat) - 0.9 - 125/140
July 23, 2002 - Wrecked (2nd Repeat) - 1.3 - 110/140
July 17, 2002 - Smashed (2nd Repeat) - 0.9 - 118/135
July 16, 2002 - Hell's Bells (Repeat) - 1.1 - 109/135
July 10, 2002 - Tabula Rasa (2nd Repeat) - 1.1 - 102/130
July 9, 2002 - As You Were (Repeat) - 1.2 - 98/130
July 3, 2002 - Life Serial (2nd Repeat) - 0.8 - 112/130
July 2, 2002 - Once More, With Feeling (2nd Repeat) - 1.5 - 94/130
June 25, 2002 - All The Way (2nd Repeat) - 1.6 - 96/134
June 18, 2002 - Flooded (2nd Repeat) - 1.3 - 100/130
June 11, 2002 - After Life (2nd Repeat) - 1.2 - 98/124
June 4, 2002 - Bargaining Part 2 (2nd Repeat) - 1.3 - 107/133
May 28, 2002 - Bargaining Part 1 (2nd Repeat) - 1.4 - 101/126
May 21, 2002 - Two To Go & Grave - 3.3 - 75/119
May 14, 2002 - Villains - 3.2 - 75/112
May 7, 2002 - Seeing Red - 2.7 - 93/123
April 30, 2002 - Entropy - 2.8 - 89/125
April 23, 2002 - Older And Far Away (Repeat) - 1.7 - 105/129
April 16, 2002 - Dead Things (Repeat) - 1.2 123/142
April 16, 2002 - Doublemeat Palace (Repeat) - 1.8 - 113/142
April 9, 2002 - Gone (Repeat) - 1.9 - 106/140
April 2, 2002 - Wrecked (Repeat) - 1.9 - 105/140
March 26, 2002 - Smashed (Repeat) - 1.8 - 104/140
March 19, 2002 - Tabula Rasa (Repeat) 2.3 95/135
March 12, 2002 - Normal Again - 3.2 - 89/142
March 5, 2002 - Hell's Bells - 3.4 - 87/145
February 26, 2002 - As You Were - 3.1 - 84/130
February 19, 2002 - All The Way (Repeat) - 1.6 - 95/123
February 19, 2002 - Life Serial (Repeat) - 1.7 - 94/123
February 12, 2002 - Older And Far Away - 3.1 - 77/120
February 5, 2002 - Dead Things - 3.3 - 85/130
January 29, 2002 - Doublemeat Palace - 3.5 - 87/136
January 22, 2002 - Bargaing Part 1 & Bargaining Part 2 (Repeat) - 1.9 - 106/135
January 15, 2002 - The Gift (3rd Repeat) - 1.3 - 113/136
January 15, 2002 - The Weight Of The World (2nd Repeat) - 1.6 - 108/136
January 8, 2002 - Gone - 3.3 - 83/133
January 1, 2002 - Flooded (Repeat) - 1.5 - 102/128
December 4, 2001 - After Life (Repeat) - 2.0 - 101/132
November 27, 2001 - Wrecked - 3.7 - 90/137
November 20, 2001 - Smashed - 3.4 - 82/111
November 16, 2001 - Once More, With Feeling (Repeat) - 1.0 - 123/138
November 13, 2001 - Tabula Rasa - 3.6 - 89/138
November 6, 2001 - Once More, With Feeling - 3.4 - 88/131
October 30, 2001 - All The Way - 3.7 - 82/130
October 23, 2001 - Life Serial - 3.5 - 85/136
October 16, 2001 - Flooded - 3.5 - 93/136
October 9, 2001 - After Life - 3.7 - 82/126
October 2, 2001 - Bargaining Part 1 & Bargaining Part 2 (Season Premiere) - 4.3 - 78/135