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:
- Fix bookmark removed when deleting history item immediately above
- Fix segfault when adding bookmark to most recent history item
- Fix result containing interval with zero as lower value not displayed automatically
- Fix calculate as you type result cleared or added to history again when history is modified
- Fix selection and status after calculation of expression from command line
- Fix too long lines in history with some fonts
- Fix number of decimals for currency quantity when currency is placed before quantity
- Do not use parenthesis for number with comma as decimal point, or separator, on input of operator
- Add temporary check box to function edit dialog
- Make preferences dialog scrollable (allows smaller size)
- New function: ymd() (returns the number of calendar years, months, and days between two dates) (libqalculate)
- Return exact value for more argument values in lambertw() function (libqalculate)
- Integrate sqrt(ax + b)/x and 1/(x × sqrt(ax² + bx + c)) (libqalculate)
- Do not use same "n" variable for different unknown integer values in equation result (e.g. e^e^x = 1) (libqalculate)
- Solve e^x = ln(x), a × sin(x) = a × tan(x), and a × sin(x) = −a × tan(x) (libqalculate)
- Solve f(x) = f(x²) and f(x) = −f(x²) for trigonometric functions, and exponentiation (libqalculate)
- Do not return x = −infinity as solution for a^x = 0 (libqalculate)
- Fix a = 1 and b = 1 solution for a^x = b when the value of a and b are unknown (libqalculate)
- Fix uncertainty propagation with duplicate equal data set functions (libqalculate)
- Fix trigonometric functions with function in argument not calculated when angle unit is not radians (libqalculate)
- Fix crashes with deeply recursive expressions, and from unavailable pipe2, on Mac OS (libqalculate)
- Fix division by zero warning for some expressions with zero quantity (e.g. "1 m × 0 kg") (libqalculate)
- Fix inconsistent (over)use of secondary exchanges rate sources (libqalculate)
- Minor bug fixes and feature enhancements
Download the source code here:
qalculate-gtk-5.13.0.tar.gz
Download the source code of libqalculate here:
libqalculate-5.13.0.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 requires Windows 10 (1809) or later. They can also be installed using the Windows Package Manager (winget) or Chocolatey.
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/.