| Conversions | Players | VS Club | Date | |
|---|---|---|---|---|
| 10 | Patricio Fernandez | RC Timisoara | 20-10-2018 | Match details |
| 7 | Greig Laidlaw | Gwent Dragons | 15-12-2018 | Match details |
| 7 | Patricio Fernandez | Gwent Dragons | 18-01-2019 | Match details |
| 6 | Tim Nanai Williams | RC Timisoara | 08-12-2018 | Match details |
| 4 | Greig Laidlaw | Northampton Saints | 13-10-2018 | Match details |
| 4 | Morgan Parra | Northampton Saints | 12-01-2019 | Match details |
| 4 | Greig Laidlaw | Northampton Saints | 31-03-2019 | Match details |
| 3 | Greig Laidlaw | La Rochelle | 10-05-2019 | Match details |
| 2 | Morgan Parra | Harlequins | 20-04-2019 | Match details |
| 1 | Greig Laidlaw | Northampton Saints | 12-01-2019 | Match details |
| 1 | Morgan Parra | Northampton Saints | 31-03-2019 | Match details |
