A free, easy-to-use calculator with both standard and scientific modes. Perform basic arithmetic or advanced functions like trigonometry, logarithms, and more — all without downloading any app.

Is this calculator free?

Yes, this calculator is completely free to use with no login or subscription required.

Does it work on mobile devices?

Absolutely. The calculator is fully responsive and works on all screen sizes, including smartphones and tablets.

What functions are available in scientific mode?

Scientific mode supports trigonometric functions, logarithms, exponents, constants (π, e), and more.

Is any of my data saved?

No. All calculations are handled in your browser. We don’t store or track any input or usage data.

Disclaimer This calculator is intended for general and educational purposes only. While we strive for accuracy, always double-check important calculations. We do not collect any personal data or input from users.