Basic calculator
Do basic arithmetic with buttons or the keyboard directly in your browser.
Basic calculator
What the basic calculator does
The basic calculator handles everyday arithmetic in the browser. Use it for quick addition, subtraction, multiplication and division when you need a clear numeric result without a more specialized calculator.
How to use the calculator
Type an expression in the field or build it with the on-screen buttons. Press Enter or the equals button to calculate the result, AC to clear the calculator and the backspace button to remove the last character. Escape clears the calculator from the keyboard.
Supported operations
- Addition with +.
- Subtraction with -.
- Multiplication with * or the multiply button.
- Division with / or the divide button.
- Parentheses for controlling the order of operations.
Example calculations
- 1 + 2 = 3.
- 10 - 4 = 6.
- 3 * 4 = 12.
- 12 / 3 = 4.
- (2 + 3) * 4 = 20.
Order of operations and decimals
The calculator follows the usual order of operations: parentheses first, then multiplication and division, then addition and subtraction. You can use either a decimal point or a decimal comma in the input. The result is formatted for English.
Limitations
This is a basic arithmetic calculator, not a scientific calculator. It does not include trigonometric functions, powers, unit conversion, currency conversion or specialized tax, accounting or financial rules.
FAQ
Can I use the keyboard?
Yes. You can type numbers, operators and parentheses directly into the input field.
Can I use a decimal comma?
Yes. The input accepts both a decimal point and a decimal comma.
What happens if I divide by zero?
The calculator shows an error message because division by zero is not allowed.
Is this a scientific calculator?
No. This calculator is for basic arithmetic, not scientific functions or specialized formulas.