Professional Online Calculator
A full-featured scientific and standard calculator with live calculation history, trigonometric functions, memory registers, and physical keyboard support.
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Calculation History
No calculations yet. Enter an expression to begin.
Physical Keyboard Shortcuts
You can operate the calculator hands-free using your computer or laptop keyboard:
Numbers & Decimal0 - 9 .
Operators (+, −, ×, ÷)+ - * /
Calculate (Equals)Enter or =
Backspace / DeleteBackspace
Clear All (Reset)Esc
Parentheses( )
Exponents / Power^
Percentage%
Scientific Functions & Formula Guide
The Scientific Mode provides rigorous mathematical operations designed for engineers, students, scientists, and financial analysts:
- Trigonometry (sin, cos, tan): Evaluates ratios in either Degrees or Radians (toggle via the DEG/RAD button).
- Logarithmic Functions (ln, log): Natural logarithm base e (ln x) and common logarithm base 10 (log₁₀ x).
- Exponents and Roots (xʸ, x², √x): Raise any base to an integer or fractional exponent, or compute the principal square root.
- Factorial (x!): Calculates the product of an integer and all integers below it (n! = n × (n−1) × ... × 1).
- Memory Registers (MC, MR, M+, M−, MS): Store partial results and retrieve them across multi-step calculations without losing context.