Calculator
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A free online scientific calculator that runs entirely in your browser. Type complete expressions like sin(45) * 12 + 15% and see the result instantly, with a running history of everything you have calculated.
How to use it
- Type your expression with the on-screen keypad or your physical keyboard.
- Press the equals button (or Enter) to evaluate the whole expression at once.
- Open the history panel to review, copy, or reuse any earlier result.
- Use AC to clear the current input and start a fresh calculation.
Key features
- Scientific functions: sin, cos, tan, log, ln, square root, powers, and factorials
- Percentage support, so you can type 15% directly inside an expression
- Expression parser that respects the correct order of operations
- Automatic history of your recent calculations
- Works offline once loaded, with no sign-up required
Frequently asked questions
Is the calculator free to use?
Yes. The calculator is completely free, requires no account, and has no usage limits.
Does it support percentages and scientific functions?
Yes. You can write percentages directly in an expression and use trigonometric, logarithmic, and exponential functions. You can also switch between degrees and radians.
Where is my calculation history stored?
Your history is kept locally in your own browser. Nothing you type is uploaded to any server.