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Software · Office & notes

Modular Calculator

A powerful, scriptable, modular calculator aimed at scientific, engineering or computing work.

  • Completely free
  • Linux
  • Open source

At a glance

Modular Calculator is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (GPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

  • Open source code
  • Commercial use allowed

About

A powerful, scriptable, modular calculator aimed at scientific, engineering or computing work. Long calculations can be written as a list of calculations, storing results into variables to be used in the next stage. All features can be added, removed, and customised, and new features can be written in python. Features: Numbers can be in any base and convert to another base Variable assignment Statistical and trigonometry functions Date and time manipulations and calculations Boolean logic Units, including conversion to other units - metric, US customary and British Imperial units supported Arrays - any operator or function can accept arrays as input and automatically execute across the entire array String manipulation, including regular expressions - strings can be used as numbers, and vice-versa User-defined functions - write your own functions you can then reuse Enable and disable any features in the calculator you wish, and customise how features work Write your own features in python to add to the calculator

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from Flathub (credit card, publisher, licence, free status, platforms, commercial use, version) —
  • Last technical check: 8 November 2026
  • Description from Flathub — AppStream (Flathub)

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