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:
- Place approximate value before exact in calculate as you type result
- Option to disable cursor blinking
- Set ans variable to solution(s) of equation (as if solve() function were used)
- Fix display of units automatically appended to expression in parse status
- Fix reading of expressions from file
- a(i) and a[i] syntax (the latter with support for functions) for element in vector (libqalculate)
- New function: factor() (libqalculate)
- Use hours or minutes as default unit for conversion to time unit of expression with time format but no units (e.g. "0:00:12 to s") (libqalculate)
- Always use four digits for year in date (e.g. "0064-07-18" instead of "64-07-18"), and support input of date using DD-MM-YYYY format (libqalculate)
- Fix solving of x^4-4x^3+10x^2-12x+1=0, and similar, in exact mode (libqalculate)
- Fix dual/auto approximation when unable to find exact solution to equation (libqalculate)
- Fix rounding in 1/# conversion to integer (e.g. "1/2 to 0.99") (libqalculate)
- Fix unability to find approximate solutions to some high degree equations (e.g. "x⁴ − 4x³ + 10x² − 12x = −1") (libqalculate)
- Fix automatic variable detection in select() (libqalculate)
- Minor bug fixes and feature enhancements
Download the source code here:
qalculate-qt-5.5.0.tar.gz
Download the source code of libqalculate here:
libqalculate-5.5.0.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 (1809) 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/.