Qalculate! is a multi-purpose cross-platform desktop calculator. It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation). Features include a large library of customizable functions, unit calculations and conversion, symbolic calculations (including integrals and equations), arbitrary precision, uncertainty propagation, interval arithmetic, plotting, and a user-friendly interface (Gtk, Qt, and CLI).
Changes:
- Automatically calculate expression selection if calculate as you type is enabled
- Add option to add or edit comment in history
- Add option to clear expression or replace with result after calculation
- Add output in scientific (sci), engineering (eng), ans simple notation as "to"-operator options
- Improve completion
- Replace edit-clear icon on keypad button with "C"
- Support non-existing X-variables in plot dialog
- Enable calculate as you type by default
- Show warning about default assumptions the first time an equation is solved
- Show warning symbol when calculate as you type expression results in a question
- Show warning and ask for confirmation when deactivating interval arithmetic
- Fix custom time zone in calculate as you type result when added to history
- Fix floating point value in floating point conversion dialog for extended and microchip formats
- Improve support (and fix segfault) for exponential notation in hexadecimal numbers (libqalculate)
- Add TeX point, TeX scaled point, twip, agate, darcy, kayser, lambert, foot-lambert, and cc units (libqalculate)
- Add compton wavelength constants for muon, neutron, proton, and tau (libqalculate)
- Update calculation of fraction of year (with day counting basis 0 and 1) to match method used in spreadsheets other than Gnumeric (libqalculate)
- Change default quantile algorithm from 8 to 7 (libqalculate)
- Improve accuracy for intervals in solutions to equations when using interval arithmetic (libqalculate)
- Fix poolvar(), ttest(), cor(), dollarde() and dollarfr() functions (libqalculate)
- Fix inequality with 1/f(x) on one side, e.g. "1/(x-2) ≤ 2" (libqalculate)
- Fix value of Planck unit (was rounded to 7 decimals) (libqalculate)
- Fix segfault with extremely small numbers and high number of bits in floating point conversion (libqalculate)
- Fix crashes and freezes in some corner cases (libqalculate)
- Many minor bug fixes and feature enhancements
Download the source code here:
qalculate-gtk-5.8.0.tar.gz
Download the source code of libqalculate here:
libqalculate-5.8.0.tar.gz
Download Windows binaries here:
64-bit installer
64-bit zip (unpack and run without further installation; no application data are read or written outside of the unpacked directory)
32-bit installer (without Qt GUI)
32-bit zip (without Qt GUI)
The binaries can also be installed using the Windows Package Manager (winget). The 64-bit binaries requires Windows 10 (1809) or later.
GNU/Linux binaries:
A flatpak package (recommended) is available at https://flathub.org/apps/details/io.github.Qalculate.
A snap package is available at https://snapcraft.io/qalculate.
64-bit (x86) self-contained binaries (extract and run from anywhere on most GNU/Linux distributions; no translations included)
For more information visit the website at http://qalculate.github.io/.