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Table 2 Morphine equivalent conversion factors

From: Dose patterns in commercially insured subjects chronically exposed to opioids: a large cohort study in the United States

Opioid drug Oral morphine equivalent dose
Buprenorphine Multiplied by 60
Butorphanol Multiplied by 7
Codeine Divided by 12
Dihydrocodeine Divided by 10
Fentanyl (patch) Multiplied by 150
Hydrocodone Multiplied by 1.5
Hydromorphone (oral) Multiplied by 5
Hydromorphone (parenteral) Multiplied by 10
Levorphanol Multiplied by 6
Meperidine Divided by 12
Methadone Multiplied by 10
Morphine (parenteral) Multiplied by 2
Oxycodone Multiplied by 1.5
Oxymorphone Multiplied by 10
Pentazocine Divided by 4
Propoxyphene Divided by 24
Tramadol Divided by 5