Opiate Conversion Calculator
Converts between different types and routes of opiates.
This calculator is for double-checking opiate conversion, and should NOT be used as the primary means for ordering.
- Select the opiate and route that you wish to convert from.
- Input the total daily dose in milligrams of the opiate you are converting from.
- Select the opiate you wish to convert to. The total daily dose will be displayed in the results bar.
Advice
- Opiates vary widely in terms of potency. Always double check doses and units.
- Conversion factors may differ across various sources. This tool utilizes the conversion factors published in McPherson (2010).
- Accordingly, these results are approximate and should be viewed as general reference points that must be applied in conjunction with clinical judgment and expertise.
- Decreasing the dose of the new opiate by 33-50% is strongly recommended unless the patient is in severe uncontrolled pain on the current regimen.
- Consultation with a pain management physician or pharmacist is recommended if converting to and from multiple opiates or from fentaNYL.