Morphine milligram equivalent calculator. Approximate factors for clinical reference.
| Opioid | Oral Factor | Notes |
|---|---|---|
| Morphine | 1 | Reference |
| Hydrocodone | 1 | |
| Oxycodone | 1.5 | |
| Hydromorphone | 4 | |
| Oxymorphone | 3 | |
| Codeine | 0.15 | |
| Tramadol | 0.1 | |
| Fentanyl patch | — | ~2.4 × mcg/hr |
| Methadone | Varies | Dose-dependent; use caution |
Factors are approximate and based on common clinical references (CDC-style). Methadone conversions are nonlinear and higher risk. Always individualize and monitor. Not a substitute for clinical judgment.