Converts dosages between different opioid medications based on equianalgesic ratios. This calculator is for informational purposes only and does not constitute medical advice. Always consult with a healthcare professional for dosage adjustments.
Start with your values, or try a preset.
Enter Morphine Dosage (mg), Hydromorphone Dosage (mg), Oxycodone Dosage (mg), Fentanyl Patch Dosage (mcg/hr), and Methadone Dosage (mg) in the units shown.
Read Morphine Equivalent (mg), Methadone Equivalent (mg), Fentanyl Patch Equivalent (mcg/hr), Oxycodone Equivalent (mg), and Hydromorphone Equivalent (mg) in the results panel. Results update as you change the inputs.
Choose a preset to load an example, then adjust the values for your situation.
See the inputs and their calculated results.
Morphine Dosage (mg): 30 mg; Hydromorphone Dosage (mg): 0 mg; Oxycodone Dosage (mg): 0 mg; Fentanyl Patch Dosage (mcg/hr): 0 mcg/hr; Methadone Dosage (mg): 0 mg
Morphine Equivalent (mg): 30 mg; Methadone Equivalent (mg): 7.5 mg; Fentanyl Patch Equivalent (mcg/hr): 12.5 mcg/hr; Oxycodone Equivalent (mg): 20 mg; Hydromorphone Equivalent (mg): 4 mg
Morphine Dosage (mg): 0 mg; Hydromorphone Dosage (mg): 4 mg; Oxycodone Dosage (mg): 0 mg; Fentanyl Patch Dosage (mcg/hr): 0 mcg/hr; Methadone Dosage (mg): 0 mg
Morphine Equivalent (mg): 30 mg; Methadone Equivalent (mg): 7.5 mg; Fentanyl Patch Equivalent (mcg/hr): 12.5 mcg/hr; Oxycodone Equivalent (mg): 20 mg; Hydromorphone Equivalent (mg): 4 mg
Morphine Dosage (mg): 0 mg; Hydromorphone Dosage (mg): 0 mg; Oxycodone Dosage (mg): 20 mg; Fentanyl Patch Dosage (mcg/hr): 0 mcg/hr; Methadone Dosage (mg): 0 mg
Morphine Equivalent (mg): 30 mg; Methadone Equivalent (mg): 7.5 mg; Fentanyl Patch Equivalent (mcg/hr): 12.5 mcg/hr; Oxycodone Equivalent (mg): 20 mg; Hydromorphone Equivalent (mg): 4 mg
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