CE QUE JE SAIS by JOHNNY HALLYDAY has sold 650,000 copies in Belgium, France and Switzerland.
CE QUE JE SAIS certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Belgium |
25,000 | 1x Gold |
Belgium Sales: 25,000
Certification / note: 1x Gold
Certification Date / sales as of:
|
|
 France |
600,000 | 2x Platinum | 22 December, 1998 |
France Sales: 600,000
Certification / note: 2x Platinum
Certification Date / sales as of: 22 December, 1998
|
 Switzerland |
25,000 | 1x Gold | 1998 |
Switzerland Sales: 25,000
Certification / note: 1x Gold
Certification Date / sales as of: 1998
|
| Total sales | 650,000 | (in 3 countries) |
Total
Sales: 650,000
(in 3 countries)
|
Year-end chart performance for CE QUE JE SAIS
| Chart 1998 | Rank |
| Belgian Albums (Ultratop Wallonia) |
23 |
| French Albums (SNEP) |
14 |