Online Calculator
A free web calculator for basic math and percentages
A straightforward online calculator that handles addition, subtraction, multiplication, and division, plus percentages and sign flipping. You can type with your keyboard instead of clicking, and your last 20 calculations are kept in a history list so you can pull any of them back up with a single click. Everything runs in your browser — nothing is sent to a server.
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🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
How to use
- Enter a value using the number buttons or your keyboard's number keys.
- Pick an operator (+, -, ×, ÷) and enter the next value.
- Press the = button (or the Enter key) to see the result.
- Click any entry in the history list on the right to load it again, or use the copy button to grab the result.
FAQ
- Where is my calculation history stored?
- It's only shown temporarily on screen — nothing is sent to a server or saved. Refresh the page and the history is gone.
- Can I use my keyboard?
- Yes. The number keys work, along with +, -, *, /, %, Enter, Backspace, and Esc.
- Can it handle complex expressions with parentheses?
- No. This calculator follows standard order of operations — multiplication and division before addition and subtraction — but it doesn't support parentheses.