Scientific Calculator
A full scientific calculator with trigonometry, logarithms, powers, roots, factorials and memory.
Runs in your browser. Your input is processed on your device and is not uploaded to our server.
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How to use the Scientific Calculator
- Type an expression or use the buttons, for example sin(30) + 2^3.
- Choose degrees or radians for trigonometric functions.
- Press = or Enter. Previous results are kept in the history.
Expressions are evaluated by a safe parser written for this tool. Nothing is executed as code. Supported: + − × ÷, ^ (power), %, parentheses, sin, cos, tan and their inverses, sinh/cosh/tanh, ln, log (base 10), log2, √ (sqrt), cube root, abs, factorial (!), π, e and Ans. Operator precedence follows standard mathematical rules, and powers are right-associative (2^3^2 = 2^9).
Frequently asked questions
Why does sin(30) give 0.5?
The calculator is in degree mode by default. Switch to radians for sin(π/6) style input.
How precise are the results?
Calculations use double-precision floating point (about 15 significant digits), the same as most calculators and spreadsheets.