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:
- Support for specifying a fixed denominator for display of fractions (e.g. "0.3 ft ➞ 1/8 ≈ (3 + 5/8) in")
- Return gcd of numerators divided by lcm of denominators in gcd() with non-integer rational numbers, and vice versa for lcm()
- Add units for mean Gregorian and tropical years
- Ignore underscore in number
- Replace defunct exchange rates source and fix bitcoin exchange rate
- Fix asin(x)=a, acos(x)=a, and atan(x)=a, when a contains an angle unit and default angle unit is set
- Fix output of value converted to unit expression with numerical multiplier in denominator, e.g. "➞ L/(100 km)"
- Fix segfault when trying to solve "(xsqrt(x)-ysqrt(y))/(sqrt(x)-sqrt(y))=x+sqrt(x*y)+y"
- Fix parsing of case insensitive object name ending with Unicode character when followed by another Unicode character in expression, e.g. "микрометр"
- Add history command, listing expression history
- Display all exponents 0-9 using Unicode superscript characters if these are the only exponents in the expression
- Minor bug fixes and feature enhancements
For changes in the GUIs, see the release notes for qalculate-gtk and qalculate-qt
Download the source code here:
libqalculate-4.9.0.tar.gz
Download the source code for the graphical user interfaces (qalculate-gtk and qalculate-qt) here:
qalculate-gtk-4.9.0.tar.gz
qalculate-qt-4.9.0.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)
The binaries can also be installed using the Windows Package Manager (winget). The new Qt GUI requires Windows 10 or later. 32-bit binaries (installer and zip) are also available but do not include the Qt GUI.
GNU/Linux binaries:
flatpak packages are available at https://flathub.org/apps/details/io.github.Qalculate.qalculate-qt (Qt GUI) and https://flathub.org/apps/details/io.github.Qalculate (GTK GUI).
snap packages are available at https://snapcraft.io/qalculate-qt (Qt GUI) and https://snapcraft.io/qalculate (GTK GUI).
64-bit (x86) self-contained binaries (GTK GUI) (extract and run from anywhere on most GNU/Linux distributions; no translations included)
For more information visit the website at http://qalculate.github.io/.