| Conversions | Players | VS Club | Date | |
|---|---|---|---|---|
| 4 | Leigh Halfpenny | Benetton Treviso | 16-12-2017 | Match details |
| 3 | Leigh Halfpenny | Benetton Treviso | 09-12-2017 | Match details |
| 3 | Daniel Jones | Bath | 12-01-2018 | Match details |
| 3 | Daniel Jones | Toulon | 20-01-2018 | Match details |
| 2 | Leigh Halfpenny | Toulon | 15-10-2017 | Match details |
| 2 | Leigh Halfpenny | La Rochelle | 30-03-2018 | Match details |
| 1 | Leigh Halfpenny | Bath | 20-10-2017 | Match details |
| 1 | Rhys Patchell | Benetton Treviso | 09-12-2017 | Match details |
| 1 | Rhys Patchell | Leinster | 21-04-2018 | Match details |
