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Scientific calculator

Type an expression or use the pad. It handles the usual arithmetic plus powers, roots, trig, logs, factorials, parentheses and memory, and Enter works out the answer.

Trig follows the degree or radian mode you pick. Everything is worked out in the page, with no server and nothing stored.

Type directly or use the pad. Enter works out the answer; the buttons cover trig, logs, powers, roots, factorial and memory. Trig follows the degree mode above.

Questions

Is anything I type sent anywhere?
No. Every tool here runs in the page itself. There is no server that receives your grades, your essay or your sources, and you can check it in your browser's network tab: using a tool produces no request carrying what you typed.
Degrees or radians?
Your choice, with a toggle above the pad. It starts in degrees, because that is what most homework uses, and switches to radians when you need them. The mode applies to sin, cos, tan and their inverses.
Can I type instead of pressing buttons?
Yes. The screen is an ordinary text field, so you can type the whole expression, including function names like sin and sqrt, and press Enter. The buttons just save typing.
What does the memory do?
M plus adds the current value to memory, M minus subtracts it, MR puts the stored number into the expression, and MC clears it. It is the standard calculator memory, held only while the page is open.
Is it safe to paste a long expression?
Yes. The expression is parsed by a small maths evaluator, not run as code, so there is no way for what you type to do anything other than arithmetic.

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