GREATEST HITS by HELEN REDDY has sold 2,220,000 copies in Canada, Hong Kong, United Kingdom and United States.
GREATEST HITS certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Canada |
100,000 | 1x Platinum | 1977 |
Canada Sales: 100,000
Certification / note: 1x Platinum
Certification Date / sales as of: 1977
|
 Hong Kong |
20,000 | 1x Platinum |
Hong Kong Sales: 20,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
 United Kingdom |
100,000 | 1x Gold | 1 April, 1976 |
United Kingdom Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 1 April, 1976
|
 United States |
2,000,000 | 2x Platinum | 5 February, 1992 |
United States Sales: 2,000,000
Certification / note: 2x Platinum
Certification Date / sales as of: 5 February, 1992
|
| Total sales | 2,220,000 | (in 4 countries) |
Total
Sales: 2,220,000
(in 4 countries)
|
Year-end chart performance for GREATEST HITS
| Chart 1975 | Rank |
| Canadian Albums (RPM) |
77 |
| Chart 1976 | Rank |
| Canadian Albums (RPM) |
71 |
| UK Albums (Music Week) |
45 |
| US Albums (Billboard 200) |
27 |