Scientific Calculator

Click the buttons or type on your keyboard — digits, + − × ÷, parentheses, ^ for powers, and ! for factorials all work. Press = or Enter to evaluate.

DEG mode interprets angle inputs as degrees (sin(30) = 0.5); RAD mode uses radians (sin(π/2) ≈ 1). Tap the DEG/RAD button to switch; your choice is remembered.

Type a whole number and press n! — for example 5! = 120. Factorials work for integers from 0 to 170.

Use x² for squaring, xʸ for any power (e.g. 2^3), √ for square root and ∛ for cube root. Powers are right-associative, so 2^3^2 = 512.

It converts a number to a percent: 50% becomes 0.5. So 200 × 15% gives 30.

M+ adds the current result to memory, M− subtracts it, MR recalls the stored value into your expression, and MC clears it. An M badge appears while memory is non-zero.

Your expression divides by zero somewhere. Check for a denominator that evaluates to 0 and adjust it.

Functions like square root, ln, and log are undefined for those inputs in real-number math, so the calculator reports invalid input instead of guessing.

Yes — your recent calculations and settings are stored privately in your own browser. Nothing is sent to a server. Click any history entry to reuse it.

Digits, + − * / % ^ ( ) ! and . type directly; Enter or = evaluates; Backspace deletes; Escape clears.