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:
- Option (enabled by default) to show expression status (parsed expression and calculated value) as you type in history list, instead of in tooltip (Qt)
- Option to hide toolbar (Qt)
- Option to preserve height of history list when keypad or number bases are shown/hidden (Qt)
- Headers for keyboard shortcuts and actions lists to allow custom sorting (Qt)
- Option to show/hide hidden units (hidden by default) in units window (Qt)
- Option to change the max number of history lines saved (GTK, Qt)
- Reduced minimum height (one line) of expression field (Qt)
- Fix subsequent tab completions after completion of unit with prefix (GTK, Qt)
- Fix convert button text, when toolbar style is not icon only (Qt)
- Fix history list not cleared before reload if there are exactly one item (Qt)
- Physical constants updated with CODATA 2022 values (libqalculate)
- New function: allroots() (libqalculate)
- New units: therm, thermie, IUNS calorie, rpm (libqalculate)
- Additional names/symbols for turn unit (libqalculate)
- Use symbol "cal" for thermochemical (instead of international table) calorie (libqalculate)
- Change title and names/symbols of weak mixing angle (prepend "sin2" to theta variants) (libqalculate)
- Return exact negative integers in log10() (libqalculate)
- More conservative handling of infinity in equations (libqalculate)
- Remove n from equation solution if possible using assumptions of x (libqalculate)
- Fix unnecessary parenthesis, with wrong color for closing bracket, around unit with exponent in HTML output (libqalculate)
- Fix input of scientific E-notation using lowercase e in numbers using concise interval notation, in expressions (libqalculate)
- Fix "bit width" and "signed integer" arguments in setbits() (libqalculate)
- Fix a^(f(x))=a^(b*g(x)) where b=2 or b=3 (libqalculate)
- Fix auto/dual approximation with "where" expression (libqalculate)
- Fix "where" expressions with multiple inequality statements for a single variable, e.g. "where x>0 and x<10" (libqalculate)
- Fix crash when a variable name/symbol with more than 20 characters is used in "where" expression (libqalculate)
- Minor bug fixes and feature enhancements
Download the source code here:
qalculate-qt-5.2.0.tar.gz
Download the source code of libqalculate here:
libqalculate-5.2.0.tar.gz
Windows binaries:
64-bit installer
64-bit zip (unpack and run without further installation; no application data are read or written outside of the unpacked directory)
The binaries can also be installed using the Windows Package Manager (winget). Requires Windows 10 or later.
GNU/Linux binaries:
A flatpak package is available at https://flathub.org/apps/details/io.github.Qalculate.qalculate-qt.
A snap package is available at https://snapcraft.io/qalculate-qt.
For more information visit the website at http://qalculate.github.io/.