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Utilities

Scientific Calculator

A calculator online scientific tool for school, homework and work — sin, cos, tan, log, ln, square roots, powers and pi, in degrees or radians. This scientific calculator is free to use in your browser, with keyboard support, memory keys, history and a full screen mode.

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How the Scientific Calculator Works

With the calculator open, type with the keypad or your keyboard — this calculator online scientific tool follows the standard order of operations, so multiplication and division happen before addition and subtraction. For example, 2 + 3 × 4 gives 14, and 10 − 2 × 3 gives 4. Tap a function key — sin, cos, tan, log, ln or √ — then type the number and close the bracket: sin(30) is 0.5 in degrees, log(100) is 2, and 2^10 is 1024. The live answer updates as you type.

Use the DEG/RAD button to switch angle modes — degrees for school work, radians for university maths — and the full screen button when you share your screen in class. The memory keys (MC, MR, M+, M−) store a running total, and the history below keeps your last sums, so you can check a figure without retyping it. This scientific calculator runs entirely in the browser, with no account, no payment and no download. With the calculator open on your screen, there is no loading and no waiting.

Frequently Asked Questions

Is this scientific calculator online free to use?
Yes — this calculator online scientific tool is free to use, with no sign-up, no payment and no download. Use it as often as you like, on any device with a browser. There are no limits on sums, no account to create and no ads blocking the keypad — just open the page and start calculating.
Does it work in degrees or radians?
Both. This calculator online scientific tool starts in degrees (DEG), which is what most school work uses — sin(30°) is 0.5. Tap the DEG button to switch to radians (RAD) for university maths and programming, where sin(π/2) is 1. The button always shows the mode you are in.
What can this scientific calculator do?
This scientific calculator does sin, cos and tan, inverse trig, log and ln, square roots, powers, factorials, pi and e, plus basic arithmetic — following the correct order of operations, so 2 + 3 × 4 is 14. It also has memory keys, a calculation history, keyboard support and a full screen mode, all running in your browser.
Do I need to download anything to use this scientific calculator?
No — there is nothing to download and nothing to install. This calculator online scientific tool runs entirely in your browser, so it works on Windows, Mac, Android and iPhone alike. Unlike many calculators online free to download, this one needs no app and no account — just open the page, and it is ready.

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