YOU KNOW I KNOW by OLLY MURS has sold 305,000 copies in Singapore and United Kingdom.
YOU KNOW I KNOW certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Singapore |
5,000 | 1x Gold | 2020 |
Singapore Sales: 5,000
Certification / note: 1x Gold
Certification Date / sales as of: 2020
|
 United Kingdom |
300,000 | 1x Platinum | 20 November, 2020 |
United Kingdom Sales: 300,000
Certification / note: 1x Platinum
Certification Date / sales as of: 20 November, 2020
|
| Total sales | 305,000 | (in 2 countries) |
Total
Sales: 305,000
(in 2 countries)
|
Year-end chart performance for YOU KNOW I KNOW
| Chart 2018 | Rank |
| UK Albums (Official Charts) |
28 |
| Chart 2019 | Rank |
| UK Albums (Official Charts) |
52 |