Work through trigonometric, logarithmic, exponential, and factorial problems with a responsive scientific calculator. Switch between degree and radian modes and share your setup via URL.
Enter an expression to begin
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History / Memory
How to use (3 quick steps)
- Tap a preset (for example 0.1 + 0.2 or sin(30)) or type an expression in the box.
- Check that the angle mode (Deg/Rad) matches your problem when using trig functions.
- Press = or hit Enter to calculate. Use “Copy result URL” to share the same expression and mode.
All calculations run only in your browser — nothing you type is sent to a server.
FAQ
How do I switch angle modes?
Use the Deg / Rad toggle below the display. The selection is preserved when you share the result URL.
Why do I see an error message?
Domain violations such as square roots of negative numbers, dividing by zero, or logarithms of non-positive values trigger an error banner. Adjust the expression and try again.