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On the terminal, I use `qalc`[1]. It's a nice natural language calculator that does arithmetic, solves quadratic equations/linear systems, does unit conversions and even a bit of calculus. Combine it with a cli graphing tool and you can do pretty cool things.

Anything more complicated I'm probably ok with latency, so I open up wolframalpha and enter it there, again, in natural language.

[1] https://qalculate.github.io/

2 comments

+1 for qalc and its fancy brother Qalculate (a Qt app)

--When I open the link of the parent, I see a graphical calculator, qalculate, but the description hints at something else, more of a text input calculator. The web app linked from qalculate looks like it. Is that available somewhere?--

Never mind.

I installed it, and it is two applications, one text input, one graphical, ... which also has text input, but responds differently from the examples. E.g. sqrt(72) doesn't mention it's 6√2. Confusing, but I'll find out, I guess.

The cli tool qalc is usually bundled with libqalculate

There's also https://kalker.xyz. Not as powerful, but convenient syntax