Calculator

Using the Calculator

This calculator provides both basic arithmetic and scientific functions. You can use either the on-screen buttons or your keyboard for faster calculations. The expression display shows your full calculation history, while the result display shows the current value or final result.

Keyboard Shortcuts

• Number keys — Press 0-9 and the decimal point (.) to enter numbers.
• Operators — Use +, -, *, /, and % for basic operations.
• Enter or = — Calculate the current expression.
• Backspace — Delete the last entered digit.
• Escape — Clear the entire calculation and start over.

Scientific Functions

• √x (Square root) — Calculates the square root of the current number.
• x² — Squares the current value.
• 1/x (Reciprocal) — Calculates the inverse of the current number.
• sin, cos, tan — Trigonometric functions. Note that these expect input in degrees.
• log (base 10) — Calculates the common logarithm of the current value.
• ln (natural log) — Calculates the natural logarithm (base e).
• π — Inserts the mathematical constant pi (3.14159265...).
• e — Inserts Euler's number (2.71828182...), the base of natural logarithms.