OxygenCalc - Oxygen Calculator

25 reviews
Content rating
Everyone
1K+
Downloads
Content rating
Everyone
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About this app

Oxygen Calculator will calculate the remaining oxygen left in an oxygen cylinder based on the size and remaining pressure in PSI. Also a timer/alarm can be set to alert you when you reach a preset reserve amount of oxygen left.

Current version is not verified as accurate. Do not use for life dependent information or decisions. Only use for approximate info or entertainment purposes. Use at your own risk.

Disclaimer:
Oxygen Calculator (the “App”) is not a replacement for professional medical advice and should not be relied on as health or personal advice. Use of the “App” is for informational purposes only and should not be used in place of your doctor’s or medical equipment provider’s treatment. Make sure to double check any calculation provided by the “App”. By using the “App” you agree to not hold Some Joker’s Software and/or its owners liable for any harm caused by errors or misinterpretations of data provided by the “App.” If you do not agree to these terms please uninstall the “App” and ask for a refund if you purchased a paid version. Refunds will be processed by the software store that the software was obtained from. Some Joker’s Software is not responsible for errors or omissions.
Calculates the remaining oxygen in an oxygen cylinder w/optional notification
Updated on
Sep 4, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
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  • No data collected
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Ratings and reviews

24 reviews
Adrien
September 16, 2026
This is a great app. Simple and unobtrusive, with no ads! It's had its crashing problem fixed and doesn't deserve the 1 star ratings anymore. It'd be nice to enable/disable listed tanks to only see tanks available to you, or even add new tank sizes. The oxygen tanks I frequently use aren't listed (Hospital/Ambulance M Tank 3511L with a 1.56 constant). However, you can plug in whatever values you need. The app has a really clean and simple interface with a gauge and timer that counts down.
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Michelle Dayton
December 3, 2023
Been using this app for a few months now. It allows you to accurately calculate how much time your oxygen tank has. The timer function does not run in the background. Once you set it and proceed to do something else on your phone it stops. I put the timer amount on my phone timer and use that alarm instead. I do like that you can change the figures on the timer to see how much air you have left. If you are using a tank that is less than full, you can adjust the psi to get an accurate reading.
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Some Jokers Software
September 12, 2025
With the latest version 1.1.15, the timer should run while the app is running in the background. But if you close the app the notification will not occur.
Brittany Rawlinson
June 15, 2026
Like others have said, the app will accurately calculate oxygen in the tank, especially if starting with a different PSO level, but as soon as you click away from the app, the timer stops running.
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Some Jokers Software
August 31, 2026
I'm wondering if that might be due to not allowing the app to run in the background. Thank you for letting us know

What’s new

Upgraded to SDK 36
Fixed loading Issue on newer phones
Content rating
Everyone
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App support

Phone number
+12094808998
About the developer
Arnold Jay Willis
somejoker.com@gmail.com
United States

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