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Qalculate! is a multi-purpose desktop calculator.

It is small and simple to use but with much power and versatility underneath. Features include a large library of customizable functions, unit calculations and conversion, physical constants, symbolic calculations (including integrals and equations), arbitrary precision, uncertainty propagation, interval arithmetic, plotting, and a user-friendly interface (GTK+ and CLI).


  • Calculation and parsing
  • Result display
  • Symbolic calculation
  • Functions
  • Variables and constants
  • Plotting

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