BACK AT ONE by BRIAN MCKNIGHT has sold 3,175,000 copies in Canada, Korea, Taiwan and United States.
BACK AT ONE certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Canada |
100,000 | 1x Platinum | 2000 |
Canada Sales: 100,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2000
|
 Korea |
50,000 | RIAK / Gaon charts |
Korea Sales: 50,000
Certification / note: RIAK / Gaon charts
Certification Date / sales as of:
|
|
 Taiwan |
25,000 | 1x Gold |
Taiwan Sales: 25,000
Certification / note: 1x Gold
Certification Date / sales as of:
|
|
 United States |
3,000,000 | 3x Platinum | 24 October, 2001 |
United States Sales: 3,000,000
Certification / note: 3x Platinum
Certification Date / sales as of: 24 October, 2001
|
| Total sales | 3,175,000 | (in 4 countries) |
Total
Sales: 3,175,000
(in 4 countries)
|
Year-end chart performance for BACK AT ONE
| Chart 1999 | Rank | Sales |
| US Albums (Billboard 200) |
121 | |
| US Albums (Soundscan) |
51 | 1,400,000 |
| Chart 2000 | Rank | Sales |
| Canadian Albums (SoundScan) |
197 | |
| US Albums (Billboard 200) |
48 |