I made a calculator. It calculates Spiral Knights-related things.

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SKCalc (Python version) - This version will run on anything that has Python 3.x installed.
SKCalc (Windows version) - This version will run on Windows XP, Vista, and possibly 7.

If nothing happens when you launch the program in Linux, try launching it from the Terminal with "python3.x SKCalc.py" while in the same directory. Replace "x" with your version of Python.