INTERACTIVE TOOL
Online calculator
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How to use this tool
- Enter an expression using the controls.
- Check operation order and parentheses.
- Use delete to correct an entry or AC to start again.
MethodParentheses, percentages, multiplication, and division are evaluated before addition and subtraction.
Worked example
Two plus three times four is fourteen with multiplication precedence.
Assumptions and limits
The browser uses finite-precision numbers, not symbolic or arbitrary-precision arithmetic.
Frequently asked questions
Can I use the keyboard?+
Yes. Numbers, operators, parentheses, Enter, Backspace, and Escape are supported.
What happens to my inputs?+
Calculation inputs are processed locally in your browser. Favorites and preferences may be saved on this device. The site may perform separate network requests for live panels; these do not include the values entered into this local calculator. Do not paste secrets into public tools.
How should I check the result?+
The browser uses finite-precision numbers, not symbolic or arbitrary-precision arithmetic.