Opioid Conversion Calculator4.0.0 - App Store

Opioid Conversion Calculator is built for health professionals who need a clear, efficient way to compare opioid doses and review the clinical context behind a conversion. Built by a pharmacist.

CALCULATE AND COMPARE

- Calculate total oral morphine equivalent (OME) across multiple opioids and routes: oral, parenteral, rectal, sublingual and transdermal.
- See every converted dose at once, after applying a chosen Target OME percentage for incomplete cross-tolerance.
- View conservative, rounded-down target and breakthrough dose suggestions.
- See where a daily dose sits: the header warms from orange at 50 mg/day (CDC 2022) to red at 120 mg/day (Opioids Aware). Adjust the thresholds or turn the guide off.
- Methadone uses its own dose-dependent model, and its results are clearly marked as not a starting dose.
- Convert the same opioid between routes, such as oral and parenteral morphine, with the method and sources shown.

EVERY RESULT, IN CONTEXT

- Each result opens with the converted dose, then products, clinical information, breakthrough dosing and switching timing.
- Read practice points alongside formulation-specific pharmacology, with links to the supporting sources.
- Check when to start the new opioid when switching between patches, modified-release opioids and CSCI. Switching timing is also in the menu, free for everyone.
- View official products and strengths for Australia, the United States, Germany, France and Spain, chosen independently from the app language.

TAILOR THE WORKFLOW

- Edit conversion factors and choose which opioids appear, with Pro.
- Export and import settings when moving between devices, with Pro.
- Works offline, including on first launch.
- Use the app in English, French, German, Italian, Portuguese (Brazil) or Spanish.

PRO ACCESS

The calculator stays free: the combined OME and every converted dose need no account or purchase. Pro adds breakthrough dosing, switching timing, products and clinical information to every result, plus custom conversion factors, opioid visibility and settings transfer. Your first detailed results are free to try. Available plans, prices and any introductory offer are shown using the information supplied by the App Store before purchase. Purchases can be restored in the app.

CLINICAL USE

Equianalgesic conversions are estimates and do not replace clinical judgement. Consider incomplete cross-tolerance, patient factors, formulation, route, local guidance and monitoring when interpreting a result. Review the references and terms of use before using the calculator in clinical practice.

Privacy policy: https://opioidconversioncalculator.com/privacy

Terms of use: https://opioidconversioncalculator.com/terms

Version History A cleaner, calmer design with the result first, and new tools for switching opioids.

• Dose colour guide. The equivalent header warms from orange at 50 mg/day (CDC 2022) to red at 120 mg/day (Opioids Aware). Move the thresholds or turn it off in Menu › Dose colours, for example for palliative care.
• The result comes first. Each result opens with the converted dose, then products, clinical information, breakthrough dosing and switching timing, with the regimen it came from below.
• Route conversion. Compare daily doses of the same opioid by different routes, such as oral and parenteral morphine, or oral and IV methadone, with the method and sources shown. Find it in the menu.
• Switching timing for everyone. See when to start the new opioid when changing between patches, modified-release opioids and CSCI, straight from the menu.
• Methadone, explained. Methadone results show how they were calculated and are clearly marked as not a starting dose.
• Works offline from the first launch. A built-in medicine list means the calculator works before the app has connected.
• Up-to-date products. Products and strengths are refreshed monthly from official sources, without waiting for an app update.
• Clearer capped doses. When a dose is held at a medicine's maximum, the row says what it was capped from, in one calm line.
• Easier to read at a glance. Your phone's own system font with aligned figures, and doses without trailing zeros, so 40 can't be misread as 400.
• Better on iPad, with a readable column and centred sheets.
• Fewer interruptions. Once you accept a dose above the usual maximum, stepping it with + no longer asks again. 4.0.0 Sep 26 This maintenance update fixes an analytics configuration issue and improves diagnostic reporting to help us identify and resolve app problems. 3.1.1 Sep 5 New in version 3.1.0:

- Added oral dihydrocodeine and tilidine/naloxone.
- Combined practice points and formulation-specific pharmacology in Clinical Information, with supporting source links.
- Added regional Products and strengths information.
- Simplified onboarding, Pro access and the result screen.
- Target and breakthrough dose suggestions now round down rather than display a higher value.
- Improved subscription reliability and fixed an onboarding crash. 3.1.0 Aug 29 Version 3.0.0 - Major Release:

- Customize Your Opioids - Create personalized conversion factors for your practice needs

- Hide & Show Opioids - Tailor your interface by hiding unused medications

- Export Your Data - Export opioid settings and preferences for backup or sharing

- Manage Opioids Screen - Comprehensive new interface to control your opioid database

- Enhanced UI - Smoother loading indicators and improved user experience 3.0.0 09/16/2025 - Improved UI and overall user experience
- Bug fixes and improved error handling 2.1.1 08/22/2025 Now Available in 6 Languages!

Enhance your practice with our multilingual support:
- English
- French
- German
- Italian
- Portuguese (Brazil)
- Spanish 2.0.1 09/05/2024 ### Now Available in 6 Languages!
Enhance your practice with our multilingual support:
- English
- French
- German
- Italian
- Portuguese (Brazil)
- Spanish 2.0.0 08/31/2024 - Enhanced safety: Improved UI warnings for high doses
- More precise dosing: Added support for decimal doses (e.g., 0.5)
- Faster calculations: Improved overall app performance

We're constantly working to make our app safer and more accurate. Thank you for your feedback! 1.3.0 06/28/2024 - Updated UI
- Improved methadone safety parameters
- Total OME visual safety guide
- Minor bug fixes 1.2.0 12/22/2023 - Manage subscriptions
- In app review
- Minor bug fix 1.1.0 04/14/2023 1.0 04/05/2023