Basic calculator
Do basic arithmetic with buttons or the keyboard directly in your browser.
Basic calculator
Everyday calculations
The basic calculator is for quick arithmetic in the browser. You can use the on-screen buttons or type a simple expression with the keyboard.
Supported operations
The calculator supports addition, subtraction, multiplication and division. It is meant for everyday arithmetic, not scientific, financial or tax-specific calculations.
Keyboard input
You can type a simple expression with numbers, parentheses and the supported operators. The buttons are useful on touch screens, while keyboard input can be faster on desktop.
When to use a specialized calculator
Use a dedicated calculator when the calculation involves dates, percentages, tax rules, health estimates or financial assumptions. Those tools can show more context than a basic arithmetic result.
Input errors
If an expression is incomplete, contains unsupported characters or attempts division by zero, the calculator shows a localized error message instead of a misleading result.