Online Calculator
An online calculator with arithmetic, parentheses, powers and common functions, including scientific functions (trig, logarithm, root). Fully local.
Function reference
Basic
+ - * / % ^ ( )
Trigonometric
sin cos tan asin acos atan
sind cosd tand（角度制）
Other
sqrt cbrt log ln log2 abs
floor ceil round exp
Constants
pi（π） e（自然常数）
Calculated locally; your expression never leaves the browser.
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