Opioid Conversion Calculator

CAUTION: This calculator is intended for calculating the Morphine Equivalent Dose (MED) dose for a patient taking one or more opioid medications. It should not be used to determine doses when converting a patient from one opioid to another. Equianalgesic dose ratios are only approximations and do not account for genetic factors, incomplete cross-tolerance, and pharmacokinetics.

Instructions: Fill in the mg per day for the patient’s opioid medications. The daily morphine equivalent dose is calculated automatically.

Opioid:	mg per day:	Morphine Equivalent Dose:
Codeine
Fentanyl transdermal (in mcg/hr)
Hydrocodone
Hydromorphone
Methadone
Morphine
Oxycodone
Oxymorphone
Tapentadol
Tramadol

Buprenorphine products approved for the treatment of pain are not included in the table because of their partial µ-receptor agonist activity and resultant ceiling effects compared with full µ-receptor agonists.

CDC GUIDELINES 2022

The creation of this tool was supported by the Cooperative Agreement, Number 6 NU17 CE 002751-02-01, funded by the Centers for Disease Control and Prevention. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the Centers for Disease Control and Prevention or the Department of Health and Human Services.

For further information: info@oregonpainguidance.org.