Opioid | Conversion factor |
Oral opioids | |
Codeine (mg) | 0.15 |
Tramadol (mg) | 0.1 |
Hydrocodone (mg) | 1 |
Oxycodone (mg) | 1.5 |
Methadone (mg/day) | |
1–20 | 4 |
21–40 | 8 |
41–60 | 10 |
≥61–80 | 12 |
Morphine (mg) | 1 |
Hydromorphone (mg) | 4 |
Transdermal opioids | |
Fentanyl (μg/hour) | 2.4 |
Intravenous opioids | |
Morphine (mg) | 3 |
Hydromorphone (mg) | 15 |
Fentanyl (μg) | 0.2 |
Morphine milligram equivalents (MME) will be calculated by converting consumed opioids to MME using the above conversion factors.