# Opioid Conversion Calculator — Clinical opioid conversion

> Medical app for healthcare professionals to simplify opioid conversion tasks. (iPhone/iPad app by Ayrial Beall.)

- Source: https://appshunter.io/ios/app/opioid-conversion-calculator/id6446010375 (this page in markdown: same URL + `.md`)
- Developer: [Ayrial Beall](https://appshunter.io/developer/1735693360)
- Category: Medical
- Price: Free with in-app purchases
- Rating: 3.70/5 from 17 App Store ratings · 8 written reviews indexed
- Age rating: 17+
- Requires: iOS 13.0 · 88 MB
- Languages: American English
- Released: 2023-04-05
- Data updated: 2026-09-07
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/opioid-conversion-calculator/id6446010375/reviews.md

## What is Opioid Conversion Calculator?

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.

CALCULATE AND COMPARE

- Calculate total oral morphine equivalent (OME) across multiple opioids and routes.
- Review calculated target doses after applying a chosen Target OME percentage.
- View conservative, rounded-down target and breakthrough dose suggestions.
- Move quickly between the calculation, individual results and supporting information.

REVIEW CLINICAL INFORMATION

- Read practical points alongside formulation-specific pharmacology.
- Switch between supported formulations without leaving the result.
- Follow links to the supporting references.
- View official products and strengths for supported clinical regions, 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.
- Use the app in English, French, German, Italian, Portuguese (Brazil) or Spanish.

PRO ACCESS

The core calculation remains available without creating an account. Pro adds professional detail and customisation. Available plans, prices and any introductory offer are shown using the information supplied by the App Store before purchase. Purchases and subscriptions 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

## Key features

- Extensive drug coverage
- Visual safety indicator
- Breakthrough dosing calculations
- Formulation conversions
- Up-to-date pharmaceutical formulary
- Multilingual support

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro Access | $19.99 | per year |
| Monthly Pro Access | $3.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Pro Access | $79.99 | one-time |


## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/opioid-conversion-calculator/id6446010375/reviews.md

### 3/5 — Criminal Investogator

*2025-11-08*

Yes

### 1/5 — In accurate conversions.

*2024-09-12*

I downloaded the app as a alternative to the old CDC guideline app, which is no longer available for download.  I ran it through a couple of calculations. It calculated that hydromorphone 4 mg = 20 MME.  This is incorrect as the answer should have been 16 MME. Also, oxymorphone is missing from the conversion list. It is still a medication and it does still exist. There should be a tool for calculating its conversion.  Very poorly researched, very misleading.

**Developer response:** Thank you for your feedback. I’d like to clarify that the app is based on extensive research, drawing from dozens of papers, expert opinions, and various international guidelines. While I understand that locally in the United States a 4:1 hydromorphone-to-MME conversion might be common, most global guidelines, including those recommended by many experts, suggest a 5:1 ratio, which is what the app follows. It's important to note that opioid conversion is not an exact science, and each patient needs to be considered individually, with adjustments made based on clinical judgment.

As for oxymorphone, you're absolutely right—it’s still in use, and we can certainly look into adding it. We genuinely appreciate feedback that helps us improve, and we encourage users to share suggestions through our in-app feedback portal so we can address concerns directly and continue making this the best resource possible. A 1-star review is disheartening, but we are committed to improving based on your insights.

Thanks again for your input.

### 2/5 — App not working

*2024-08-06*

When I open the app, it’s stuck in the “get started” animations

**Developer response:** Thank you for your feedback. We sincerely apologize for the inconvenience you've experienced with the "Get Started" animations. We recently identified a bug affecting approximately 1-2% of devices, which may be causing this issue.

We're pleased to inform you that we've released an update that addresses this problem. Please install the latest version of the app, which should resolve the animation issue you're encountering.

In addition to fixing this bug, our latest update also introduces support for 6 new languages, expanding the app's accessibility to more users.

We appreciate your patience and would love to hear if the update resolves the issue for you. If you continue to experience any problems, please don't hesitate to contact our support team. We're committed to providing the best possible experience for all our users.

### 3/5 — Last update

*2024-07-04*

Since the last update it is not working anymore. Why? Because it is really a great app

**Developer response:** Thank you for your feedback and for your kind words about our app. We're thrilled to hear you find it great!


We wanted to let you know that we've identified and fixed the issue that was causing problems after the recent update. The latest version of the app should now be working correctly for all users.


If you haven't already, please update to the most recent version of the app. This update not only resolves the previous issue but also introduces support for 6 new languages, making the app accessible to even more users.


We apologize for any inconvenience you may have experienced and appreciate your patience while we worked on the fix. If you encounter any further issues or have any questions, please don't hesitate to reach out to our support team.


Thank you for being a valued user of our app. We're committed to continuously improving your experience and hope you enjoy using the latest version!

### 1/5 — Don’t use

*2024-01-27*

Trash

### 5/5 — Great app

*2024-01-17*

Intuitive and clean UI. Works well.

### 5/5 — Easy, convenient, simple.

*2023-04-12*

This app takes the guess work out of some very dangerous calculations. It has research embedded along the way leading to confident and effective decision making. 

I highly recommend it.

### 5/5 — Clean interface

*2023-04-11*

A well thought out application aimed at health professionals. Easy to use and extremely thorough in comparison to other applications. The methadone addition is extremely helpful!

## Frequently asked questions about Opioid Conversion Calculator

### What is the Opioid Conversion Calculator?

The Opioid Conversion Calculator is a medical tool designed to simplify complex opioid conversion tasks for healthcare professionals. It provides drug coverage, dosage calculations, and formulation conversions within an easy-to-use interface.

### What opioids are covered by the Opioid Conversion Calculator?

The app covers a wide range of opioids in various formulations, including oral (Codeine, Hydromorphone, Methadone, Morphine, Oxycodone, Tapentadol, Tramadol), parenteral (Codeine, Fentanyl, Hydromorphone, Morphine, Oxycodone, Sufentanil), rectal (Oxycodone), sublingual (Buprenorphine), and transdermal (Buprenorphine, Fentanyl).

### Does the Opioid Conversion Calculator have a safety feature?

Yes, it features a visual safety indicator that transitions from orange to red as Oral Morphine Equivalent (OME) increases, alerting users to high dosages and promoting patient safety.

### Can I calculate breakthrough doses with the Opioid Conversion Calculator?

Yes, the app allows for easy calculation of breakthrough doses for numerous opioids, aiding in effective pain management strategies.

### Is the Opioid Conversion Calculator available in multiple languages?

Yes, the app supports six languages: English, French, German, Italian, Portuguese (Brazil), and Spanish, enhancing its accessibility for global healthcare teams.

### What is the pricing for the Opioid Conversion Calculator?

The Opioid Conversion Calculator is free to download and use. It offers optional monthly ($3.99/P1M) and annual ($19.99/P1Y) Pro Access subscriptions for additional features.

### How often is the Opioid Conversion Calculator updated?

The app was last updated on September 16, 2025, indicating ongoing development and support to maintain its accuracy and relevance with the latest pharmaceutical formulary.

### What devices is the Opioid Conversion Calculator compatible with?

The Opioid Conversion Calculator is available for iPhone, iPad, and iPod devices, making it accessible on a range of Apple mobile platforms.

## Version history (last 5 releases)

### 3.1.1 — 2026-09-05

This maintenance update fixes an analytics configuration issue and improves diagnostic reporting to help us identify and resolve app problems.

### 3.1.0 — 2026-08-29

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.

### 3.0.0 — 2025-09-16

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

### 2.1.1 — 2025-08-22

- Improved UI and overall user experience
- Bug fixes and improved error handling

### 2.0.1 — 2024-09-05

Now Available in 6 Languages!

Enhance your practice with our multilingual support:
- English
- French
- German
- Italian
- Portuguese (Brazil)
- Spanish

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## More apps by Ayrial Beall

- [Namely: Baby Names Together](https://appshunter.io/ios/app/namely-baby-names-together/id6450491249)

All apps by Ayrial Beall: https://appshunter.io/developer/1735693360

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*