Calculator
Basic and scientific calculator
What it does: Basic and scientific calculator. This free online tool works entirely in your browser with no installation required.
- Use the on-screen buttons or your keyboard to enter numbers and operators.
- Press scientific function buttons like sin, cos, log, or square root for advanced calculations.
- Press Enter or the equals button to see your result instantly with full precision.
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.