O′CLOCK by PARK JI-HOON (박지훈) has sold 109,428 copies in Korea.
O′CLOCK certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Korea |
109,428 | RIAK / Gaon charts |
Korea Sales: 109,428
Certification / note: RIAK / Gaon charts
Certification Date / sales as of:
|
|
| Total sales | 109,428 | (in 1 country) |
Total
Sales: 109,428
(in 1 country)
|
Year-end chart performance for O′CLOCK
| Chart 2019 | Rank | Sales |
| South Korean Albums (Gaon) |
52 | 109,428 |