Basic Calculator

Expression

History

Click a row to reuse the expression.

Operators: + add, - subtract, * multiply, / divide, ( ) parentheses, ^ power (e.g., 2^3 = 8).
Percent: A trailing % converts that number to a fraction of 100. Example: 30% → 0.3; 150-30% → 150 - 0.3.
Order of operations: Parentheses → exponents → multiply/divide → add/subtract.
Keyboard: Type directly; press Enter for equals, Backspace to delete, Esc to clear.
Safety: Only digits, spaces, and the operators above are accepted; anything else is rejected.

Notes & edge cases

Exponents: You can also type **; ^ is automatically converted to ** before evaluation.
Percent inside parentheses: (200*(10%)) is valid → 200*0.1.
Divide by zero: Throws an error message instead of a number.
History: Stored in your browser for this page only; click any entry to reuse.