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Free download RPNCalc Linux app to run online in Ubuntu online, Fedora online or Debian online

This is the Linux app named RPNCalc whose latest release can be downloaded as rpncalc.jar. It can be run online in the free hosting provider OnWorks for workstations.

Download and run online this app named RPNCalc with OnWorks for free.

Follow these instructions in order to run this app:

- 1. Downloaded this application in your PC.

- 2. Enter in our file manager https://www.onworks.net/myfiles.php?username=XXXXX with the username that you want.

- 3. Upload this application in such filemanager.

- 4. Start the OnWorks Linux online or Windows online emulator or MACOS online emulator from this website.

- 5. From the OnWorks Linux OS you have just started, goto our file manager https://www.onworks.net/myfiles.php?username=XXXXX with the username that you want.

- 6. Download the application, install it and run it.




RPNCalc is a command-line based Reverse Polish Notation (RPN) calculator. RPN calculators make it very simple to do complex calculations, especially if there are parentheses involved. For a quick easy example, consider solving for X with the following:

x = SQRT((((5+3) * 8)/2) ^ 6)

With a RPN Calculator, to solve for x you would start on the inner calculation and work outwards. These types of calculations are trivial with RPN.

The RPNCalc homepage provides easy examples and detailed function by function descriptions.

RPNCalc supports unlimited undo, trigonometry, basic fractional support, multiple saved stacks, robust memory slots, etc.

This is a single executable JAR file. While you will need Java installed, there is no need to install this program. Just download the JAR file, place it somewhere convenient, and execute it from the command line:

java -jar rpncalc.jar

The -h switch (or 'h' in program) will show help


  • Command Line
  • No Installation Needed
  • Single File Executable
  • Written in Java - Should run anywhere
  • Basic fraction handling
  • Unlimited undo
  • Saved stacks
  • Trigonometric functions
  • Robust memory system


System Administrators, End Users/Desktop

User interface

Console/Terminal, Command-line

Programming Language


This is an application that can also be fetched from https://sourceforge.net/projects/rpncalc-fross/. It has been hosted in OnWorks in order to be run online in an easiest way from one of our free Operative Systems.