According to Universal Music Japan, FIRST LOVE by UTADA HIKARU (宇多田 ヒカル) has sold 9,910,000 copies worldwide. The album sold best in Japan (8,600,000 copies), Korea (4,224 copies) and (0 copies).
FIRST LOVE certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Japan |
8,600,000 | 8x Million / Universal Music Japan | September 1999 |
Japan Sales: 8,600,000
Certification / note: 8x Million / Universal Music Japan
Certification Date / sales as of: September 1999
|
 Korea |
4,224 | RIAK / Gaon charts |
Korea Sales: 4,224
Certification / note: RIAK / Gaon charts
Certification Date / sales as of:
|
|
| Worldwide sales | 9,910,000 | Universal Music Japan |
Total
Sales: 9,910,000
Source: Universal Music Japan
|
Year-end chart performance for FIRST LOVE
| Chart 1999 | Rank | Sales |
| Japanese Albums (Oricon) |
1 | 7,365,830 |
 Taiwanese Albums |
8 | 450,000 |
| Chart 2000 | Rank | Sales |
| Japanese Albums (Oricon) |
82 | 251,400 |