Online Calculator
Free online calculator for addition, subtraction, multiplication, division, parentheses, percent and decimals. Click the keypad or just type on your keyboard for instant, accurate results — no download or install, works on phone and desktop. CalculatorRuns locally
Use this tool
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How to use
- Tap the keys or type an expression on your keyboard.
- Use parentheses to control order; % is the modulo operator.
- Press = or Enter for the result, C to clear, and Backspace to delete the last digit.
Frequently asked questions
Does it need internet?
The calculation runs locally in your browser, so it keeps working even offline after the page is open, and no expression is uploaded.
Can I use a physical keyboard?
Yes — type numbers, + - * /, parentheses and a decimal point, Enter to calculate, Backspace to delete and Esc to clear.
How precise is it?
It follows standard browser floating-point arithmetic for everyday math; for formal financial figures use dedicated accounting software.