Scientific Calculator
Full-featured scientific calculator with trig, log and more.
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Full-featured scientific calculator with a recursive-descent expression parser — supports trig, logarithms, powers, factorials, constants π and e, memory, DEG/RAD mode, and keyboard input.
Key Features
Expression Parser
Evaluates full expressions like sin(30)^2 + cos(30)^2 with correct operator precedence and implicit multiplication.
Trig & Inverse Trig
sin, cos, tan, asin, acos, atan — all DEG/RAD-aware.
Log, Powers & Roots
log (base-10), ln, √, ∛, x², xʸ (power), and n! (factorial).
Memory
MC, MR, M+, M− memory operations with a visual M indicator.
Keyboard Support
Type expressions with the keyboard. Enter evaluates, Backspace deletes, Escape clears.
History
Last 10 calculations shown below the keypad. Click to reload any result.
How to Use
- 1Use the buttons or keyboard to enter an expression.
- 2Toggle DEG / RAD for angle-sensitive functions.
- 3Press = or Enter to evaluate.