Scientific Calculator

Enter an expression — or use the keys — to evaluate powers, roots, logs, factorials and trigonometry. Switch the angle mode before using sin, cos or tan.

How it works

The calculator parses the expression with ordinary algebraic rules: multiplication and division before addition, and exponentiation from the right, so 2^3^2 is 512. Unary minus applies after powers, so −2^2 is −4.

Functions need parentheses: sin(30), not sin30. In degree mode, sin(30) is 1/2; in radians, use sin(pi/6). log is common log (base 10); ln is natural log.

Division by zero, even roots of negatives, and tan of 90° are rejected instead of printing Infinity.

Formula

2×3+4 = 10
2^3^2 = 2^(3^2) = 512
−2^2 = −(2^2) = −4
sin(θ) uses degrees or radians from the angle-mode control

Worked examples

Mixed arithmetic
2*3+4 → 10
Sine in degrees
sin(30) with angle mode = degrees → 0.5

Useful notes

Expressions are evaluated in the browser. There is no eval of arbitrary JavaScript.
Factorial accepts integers from 0 to 170. 0^0 is treated as undefined.

FAQ

Is this in degrees or radians?: Whichever you select. The default is degrees, so sin(30) is 0.5. Switch to radians for sin(pi/6).
What does log mean here?: log is log base 10. Use ln for the natural logarithm, or open the log calculator if you want a custom base.
Why is −2^2 equal to −4?: Exponentiation binds tighter than the leading minus, so the expression is −(2²). Write (−2)^2 if you want +4.

Related tools

See all Math tools.