According to Official Charts UK, the soundtrack GREASE has sold 25,000,000 copies worldwide. The album sold best in United States (14,900,000 copies), United Kingdom (2,700,000 copies) and Germany (1,250,000 copies).
GREASE certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
|  Australia | 1,010,000 | The Sydney Morning Herald | 2013 |  Australia Sales: 1,010,000 Certification / note: The Sydney Morning Herald Certification Date / sales as of: 2013 | 
|  Austria | 25,000 | 1x Gold | 24 January, 1995 |  Austria Sales: 25,000 Certification / note: 1x Gold Certification Date / sales as of: 24 January, 1995 | 
|  Belgium | 25,000 | 1x Gold |  Belgium Sales: 25,000 Certification / note: 1x Gold Certification Date / sales as of:  | |
|  Canada | 1,000,000 | 1x Diamond | 1978 |  Canada Sales: 1,000,000 Certification / note: 1x Diamond Certification Date / sales as of: 1978 | 
|  Denmark | 140,000 | 7x Platinum | 22 December, 2020 |  Denmark Sales: 140,000 Certification / note: 7x Platinum Certification Date / sales as of: 22 December, 2020 | 
|  France | 300,000 | 1x Platinum | 1992 |  France Sales: 300,000 Certification / note: 1x Platinum Certification Date / sales as of: 1992 | 
|  Germany | 1,250,000 | 5x Gold | 1978 |  Germany Sales: 1,250,000 Certification / note: 5x Gold Certification Date / sales as of: 1978 | 
|  Hong Kong | 20,000 | 1x Platinum |  Hong Kong Sales: 20,000 Certification / note: 1x Platinum Certification Date / sales as of:  | |
|  Italy | 50,000 | 1x Platinum | 2022 |  Italy Sales: 50,000 Certification / note: 1x Platinum Certification Date / sales as of: 2022 | 
|  Japan | 442,070 | Oricon charts |  Japan Sales: 442,070 Certification / note: Oricon charts Certification Date / sales as of:  | |
|  New Zealand | 15,000 | 1x Platinum |  New Zealand Sales: 15,000 Certification / note: 1x Platinum Certification Date / sales as of:  | |
|  Norway | 300,000 | Billboard / 1x Platinum | Issue 29.03.1980 / 1998 (for reissue) |  Norway Sales: 300,000 Certification / note: Billboard / 1x Platinum Certification Date / sales as of: Issue 29.03.1980 / 1998 (for reissue) | 
|  Spain | 300,000 | 3x Platinum | 1991 |  Spain Sales: 300,000 Certification / note: 3x Platinum Certification Date / sales as of: 1991 | 
|  Switzerland | 25,000 | 1x Gold | 1998 |  Switzerland Sales: 25,000 Certification / note: 1x Gold Certification Date / sales as of: 1998 | 
|  United Kingdom | 2,700,000 | 9x Platinum | 12 August, 2022 |  United Kingdom Sales: 2,700,000 Certification / note: 9x Platinum Certification Date / sales as of: 12 August, 2022 | 
|  United States | 14,900,000 | 8x Platinum | 7 November, 1984 |  United States Sales: 14,900,000 Certification / note: 8x Platinum Certification Date / sales as of: 7 November, 1984 | 
| Worldwide sales | 25,000,000 | Official Charts UK | Total Sales: 25,000,000 Source: Official Charts UK | 
Year-end chart performance for GREASE
| Chart 1978 | Rank | Sales | 
|  Australian Albums (Kent Music Report) | 3 | |
|  Canadian Albums (RPM) | 4 | |
|  Dutch Albums (Album Top 100) | 2 | |
|  German Albums (Offizielle Top 100) | 12 | |
|  New Zealand Albums (RMNZ) | 2 | |
|  Portuguese Albums (Música & Som) | 9 | |
|  UK Albums (Music Week) | 2 | |
|  US Albums (Billboard 200) | 2 | |
| Chart 1979 | Rank | Sales | 
|  Dutch Albums (Album Top 100) | 45 | |
|  German Albums (Offizielle Top 100) | 27 | |
|  Japanese Albums (Oricon) | 16 | 250,000 | 
|  UK Albums (Music Week) | 65 | |
|  US Albums (Billboard 200) | 20 | |
| Chart 1991 | Rank | Sales | 
|  Australian Albums (ARIA) | 9 | |
|  Dutch Albums (Album Top 100) | 3 | |
|  European Albums (Music & Media) | 36 | |
| Chart 1995 | Rank | Sales | 
|  French Albums (SNEP) | 40 | |
| Chart 1997 | Rank | Sales | 
|  US Albums (Soundscan) | 69 | 1,100,000 | 
| Chart 1998 | Rank | Sales | 
|  Australian Albums (ARIA) | 25 | |
|  Belgian Albums (Ultratop Flanders) | 57 | |
|  Belgian Albums (Ultratop Wallonia) | 56 | |
|  European Albums (Music & Media) | 63 | |
|  French Albums (SNEP) | 68 | |
|  New Zealand Albums (RMNZ) | 9 | |
|  UK Albums | 69 | 210,000 | 
|  US Albums (Soundscan) | 61 | 1,200,000 | 

