Evaluate arithmetic with parentheses
Calculate an expression containing normal operator precedence and grouped terms.
Basic Arithmetic Calculator
Basic Arithmetic Calculator
A safe browser calculator for decimal arithmetic, signs, and parentheses.
Key features
- Evaluates addition, subtraction, multiplication, and division with normal precedence.
- Supports parentheses, unary signs, and decimal values.
- Provides keyboard entry and an accessible on-screen keypad.
- Keeps calculation history only for the current browser session.
How to use
- Enter an expression or use the keypad.
- Press Equals or Enter.
- Review the result and recent calculations.
Examples
Review consecutive calculations
Compare recent expressions and results during the current page session.
Privacy
Expressions and calculation history stay in your browser and are never sent or stored.
Requirements
Only numbers, whitespace, +, -, *, /, parentheses, and decimal points are accepted. Division by zero is not allowed.
Common questions
- Is the expression executed as JavaScript code?
- No. A dedicated parser accepts only numbers, decimal points, parentheses, and arithmetic operators. Names and functions are unsupported.
- Does calculation history remain after I close the browser?
- No. Recent calculations exist only in the current page state and disappear after a reload.
Related tools
- Percentage CalculatorCalculate a percentage of a value, a ratio, or percent change with explicit formulas.
- Discount CalculatorCalculate the final price after stacked discounts and post-discount tax.
- Tip CalculatorQuickly calculate a tip, total bill, and per-person shares.
- Binary, Octal, Decimal, and Hex ConverterEnter an integer in any of four bases and calculate the others simultaneously with exact BigInt arithmetic.