Are my numbers private?

Yes. Every calculation runs in your browser, and what you type stays on your device.

Does it work offline?

Yes. Once this page has loaded, it keeps working without an internet connection.

The maths keeps full precision and only rounds what you see. For loans and taxes, check the final figures with your bank or tax office.

A clear calculator with history, brackets, powers, roots and percentages. Works with the keyboard.

Press = or Enter to keep an answer here. Click one to use it again.

200 + 10% adds 10% of 200 (220). 12% of 250 works too. Angles are in degrees unless you pick radians.

Also: sqrt, cbrt, sin, cos, tan, log, ln, abs, 5! and ans (the last answer). Enter keeps the answer, Esc clears.

Are my numbers private?: Yes. Every calculation runs in your browser, and what you type stays on your device.
Does it work offline?: Yes. Once this page has loaded, it keeps working without an internet connection.
How exact are the results?: The maths keeps full precision and only rounds what you see. For loans and taxes, check the final figures with your bank or tax office.

Ready-made settings for common jobs.

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