About this tool
Type a math expression and get the answer instantly. It supports + - * / ^ %, parentheses, the functions sin, cos, tan, log, ln, sqrt and abs, plus the constants pi and e. Expressions are parsed and evaluated with a safe tokenizer (no eval) entirely in your browser.
Frequently asked questions
Which functions and constants are supported?
The functions sin, cos, tan, log (base 10), ln (natural log), sqrt and abs, plus the constants pi and e. Angles for trig functions are in radians.
Is it safe — does it use eval?
No. The expression is parsed with a custom tokenizer and shunting-yard evaluator, so no JavaScript code is executed and nothing leaves your browser.