Scientific Calculator
A full scientific calculator that runs entirely in your browser. Trigonometry, logarithms, powers, roots and factorials are all supported, with a degree/radian switch and an expression view so you can see exactly what you are calculating.
How to Use
Click the keys or type directly on your keyboard. The expression appears at the top and a live preview of the result shows underneath; press equals to commit the answer, which is then available through the ANS key.
- Trigonometry with degree or radian mode
- Natural log, log base 10, square and cube roots
- Powers, square, factorial and reciprocal
- Constants pi and e, plus ANS for the last answer
- Full keyboard support
How the expression is evaluated
Expressions are parsed with a proper recursive-descent parser rather than JavaScript's eval, so the order of operations is explicit and predictable: exponentiation binds tighter than multiplication, which binds tighter than addition. Implicit multiplication is understood, so typing 2π or 3(4+1) works as you would expect.
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