radioterapie.eu

Supportive care · adult oncology

Opioid Converter

Equianalgesic conversion with visible source profile, incomplete cross-tolerance guardrails and a documented calculation trail.

v0.1.0-preview.1
Conversion is an estimate, not a prescription. Confirm the clinical context, organ function, formulation and local protocol. Methadone, transmucosal fentanyl and parenteral fentanyl are intentionally not converted automatically.
1
Current opioid exposureEnter the total actually received in the previous 24 hours. Add concurrent background/rescue opioids when they contribute to the daily exposure.
2
Why are you converting?This changes how cautiously the result should be interpreted.
3
Patient modifiersThese do not create a dose automatically; they raise the safety level.
4
Target opioidSelect the intended drug/route. Unsupported high-risk switches fail closed.
5
Source profileRatios differ between reputable sources; the active profile is always visible.

Enter an opioid exposure to calculate the oral morphine equivalent daily dose (oMEDD).

Why? · safety interpretation
How was this derived?
Compare the other source profile
Evidence / references

SFAP: practical equianalgesia table for strong opioids in cancer pain; the same key morphine/oxycodone/fentanyl teaching ratios are reiterated in SFAP 2026 educational material. Source

eviQ: Opioid Conversion Calculator v3 and conversion-factor page v2; expert palliative-care review, with explicit exclusions for complex conversions. Source

Faculty of Pain Medicine: switching guidance emphasizes that equianalgesic factors are approximate and generally advises a 25–50% reduction for incomplete cross-tolerance, with at least 50% in selected high-risk situations. Source

Fentanyl patch product information: target patch conversion uses separate conservative and stable-treatment tables rather than a single reversible ratio. Source