18 HITS by ABBA has sold 1,412,801 copies in 32 countries. The album sold best in Germany (300,000 copies), Australia (280,000 copies) and Brazil (125,000 copies).
18 HITS certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Australia |
280,000 | 4x Platinum |
Australia Sales: 280,000
Certification / note: 4x Platinum
Certification Date / sales as of:
|
|
 Belgium |
50,000 | 1x Platinum | 2008 |
Belgium Sales: 50,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2008
|
 Brazil |
125,000 | 1x Platinum | 2009 |
Brazil Sales: 125,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2009
|
 Germany |
300,000 | 3x Gold | March 2023 |
Germany Sales: 300,000
Certification / note: 3x Gold
Certification Date / sales as of: March 2023
|
 Korea |
7,801 | RIAK / Gaon charts |
Korea Sales: 7,801
Certification / note: RIAK / Gaon charts
Certification Date / sales as of:
|
|
 Poland |
40,000 | 2x Platinum | 3 June, 2020 |
Poland Sales: 40,000
Certification / note: 2x Platinum
Certification Date / sales as of: 3 June, 2020
|
 Russia |
40,000 | 2x Platinum | 2006 |
Russia Sales: 40,000
Certification / note: 2x Platinum
Certification Date / sales as of: 2006
|
 Europe (IFPI) |
1,000,000 | 1x Platinum | 2009 |
Europe (IFPI) Sales: 1,000,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2009
|
| Total sales | 1,412,801 | (in 32 countries) |
Total
Sales: 1,412,801
(in 32 countries)
|
Year-end chart performance for 18 HITS
| Chart 2006 | Rank | Sales |
| South Korean International Albums (Gaon) |
42 | 7,801 |
| Chart 2008 | Rank | Sales |
 UK Albums (Charts Plus) |
120 | |
| Chart 2012 | Rank | Sales |
| UK Albums (Charts Plus) |
183 | |
| Chart 2013 | Rank | Sales |
| UK Albums (Charts Plus) |
128 | |
| Chart 2017 | Rank | Sales |
| Polish Albums (ZPAV) |
68 |