Retherm

RTD & thermocouple calculations
AppID:me.danb.retherm
Author:Dan Brown
License:MIT
Donation:
InRepoSince:2025-10-12
LastRepoUpdate:2025-10-12
LastAppUpdate:Unknown
LastVersion:2.0.3
Categories:Science & Education, Unit Convertor
APK source:Codeberg/Forgejo/Gitea
Google Play:Check if it's there
icon Retherm is a simple application that converts resistances from RTD sensors to temperature. This app can currently convert Pt100, Pt500 and Pt1000 resistances to degree Celsius or Fahrenheit. The standard equations are done to the popular European/DIN standard for the temperature range of -200°C to +850°C with an average margin of error of about 0.02°C. An option is available for calculations to the less used American standard for the range 0 to 100°C with an average margin of error of about 0.2°C.

Retherm has the option to convert thermocouple voltages to degrees. The calculations are based on a 0°C reference junction temperature and use NIST polynomial values to make conversions. Types B, E, J, K, N, R, S and T are supported with outputs showing in both centigrade and Fahrenheit depending on your preference.

Retherm also features handy links to useful websites with vital information about RTD sensors.

This app is for built for quick reference use. There may be errors, although I try my best to make sure there are none. I, The application creator, will not be held liable for any problems caused due to errors within the application.
If any problems are found, feel free to raise these via Codeberg.

This application is open source, available under the MIT license, and can be found at the following URL: https://codeberg.org/danb/retherm

WhatsNew:

* Updated layout to avoid overlapping with system bars.

* Updated styles to use light status bar to avoid issue with invisible status bar text.

Hint: This app is available in both, F-Droid Main and IzzyOnDroid repos.
Download Metadata Source Issues ChangeLog
pt1000_conversion.png pt100_conversion.png settings.png thermocouple_conversions.png thermocouple_conversions_b.png
While you can download the APKs here directly, you should preferably use an F-Droid client so the app stays up-to-date on your device.

Packages

Version 2.0.3 (2025-10-12) verified help icon

Android Versions:
  • Target: 16.0
  • MinVer: 8.0
Malware-Check:Passed help icon
42 Libraries detected: help icon

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