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.

MED calculator
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
Is the patient co-prescribed benzodiazepines?

Buprenorphine is not included in the calculator because it is a partial agonist and morphine equivalent doses are uncertain. Please refer to the label for dosing parameters.