UNISON by CELINE DION has sold 1,935,000 copies in Australia, Canada, France, United Kingdom and United States.
UNISON certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Australia |
35,000 | 1x Gold | 2021 |
Australia Sales: 35,000
Certification / note: 1x Gold
Certification Date / sales as of: 2021
|
 Canada |
700,000 | 7x Platinum | 1993 |
Canada Sales: 700,000
Certification / note: 7x Platinum
Certification Date / sales as of: 1993
|
 France |
100,000 | 1x Gold | 16 September, 1997 |
France Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 16 September, 1997
|
 United Kingdom |
100,000 | 1x Gold | 22 July, 2013 |
United Kingdom Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 22 July, 2013
|
 United States |
1,000,000 | 1x Platinum | 18 June, 1997 |
United States Sales: 1,000,000
Certification / note: 1x Platinum
Certification Date / sales as of: 18 June, 1997
|
| Total sales | 1,935,000 | (in 5 countries) |
Total
Sales: 1,935,000
(in 5 countries)
|
Year-end chart performance for UNISON
| Chart 1990 | Rank |
| Canadian Albums (RPM) |
100 |
| Chart 1991 | Rank |
| Canadian Albums (RPM) |
63 |