Calculator (GNOME)
Drop-in replacementFreeAlready installed on Ubuntu and Fedora. Standard, scientific, programmer and conversion modes, as on Windows.
Verdict: No
No. Windows Calculator is a Windows app from the Microsoft Store and does not run on Linux, but every Linux system already has a calculator with the same modes sitting in the menu.
Microsoft's own project page describes Windows Calculator as a Windows app preinstalled with Windows and distributed through the Microsoft Store. The code is open source under the MIT licence, which is unusual, but the app itself is written for Windows and nobody ships a Linux build.
There is nothing to install on the other side. Ubuntu and Fedora come with Calculator, and KDE systems come with KCalc. Both do the ordinary sums, and both have the extra modes: scientific for trigonometry and logarithms, programmer for binary and hexadecimal, and unit and currency conversion.
One feature genuinely does not carry across. Microsoft added a graphing mode that plots equations, and the standard Linux calculators have no equivalent. For schoolwork that needs graphs, GeoGebra in a browser is the free answer and is more capable than the Windows calculator ever was.
There is nothing to migrate. A calculator keeps no files.
Already installed on Ubuntu and Fedora. Standard, scientific, programmer and conversion modes, as on Windows.
For the graphing mode, which the standard Linux calculators lack. Free, and runs in a browser.
One stubborn program doesn't have to decide the whole question. You can keep Windows on the same PC and restart into it only when you need Windows Calculator. Everything else you do can move.
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