Opioid Conversion Table

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Morphine milligram equivalent (MME)

  • Oral morphine: 1 MME
  • Hydrocodone: 1 MME
  • Oxycodone: 1.5 MME
  • IV morphine: 3 MME
  • Oral hydromorphone: 4 MME
  • IV hydromorphone: 20 MME

Conversion table using common doses

Opioid IV/SubQ/IM (mg) PO/Rectal (mg)
Morphine 10 30
Hydrocodone - 30
Oxycodone - 20
Hydromorphone 1.5 7.5
Codeine - 200
Hydrocodone - 30
Tramadol - 100
Fentanyl* 0.1 -

*Fentanyl dosing is only for intermittent bolus dosing.

To convert Fentanyl boluses to Fentanyl patch, please see example opioid conversions.

Morphine : Methadone have a dose based adjustment

Up to 100 mg/day Morphine --> 4:1 of Methadone

101-300 mg/day Morphine --> 8:1 of Methadone

301-500 mg/day Morphine --> 12:1 of Methadone

501-1000 mg/day Morphine --> 15:1 of Methadone

>1001mg/day Morphine --> 20:1 of Methadone