How to use the scientific calculator
- Tap the keypad or type directly β it evaluates as you go.
- Use functions like
sin,cos,tan,log,ln,β,xΚΈand!(factorial). - Toggle Degrees / Radians for trig, and press = for the final result.
What it can do
This calculator evaluates full expressions with correct order of operations (parentheses, powers, then Γ Γ·, then + β). It supports trigonometric functions and their inverses, natural and base-10 logarithms, square and nth roots, exponents, factorials, and the constants Ο and e. It runs entirely in your browser with a safe math parser β no eval, nothing uploaded.
Benefits
- Full expression evaluation with correct order of operations.
- Trig, inverse trig, logs, roots, powers, factorials and constants (Ο, e).
- Type on your keyboard or tap the keypad; degrees/radians toggle.
- Uses a safe custom parser (no eval) and runs in your browser.
Limitations to know
- It is a standard scientific calculator, not a graphing or symbolic (algebra) calculator.
- Extremely large factorials or powers may overflow to infinity.
- It does not store a history of past calculations.
Common mistakes to avoid
- Leaving the angle mode on the wrong setting for trig (degrees vs radians).
- Forgetting to close parentheses in a long expression.
- Expecting it to solve equations or plot graphs.
Alternatives
For percentages use the Percentage Calculator; for number bases use the Binary & Hex Converter.
Last updated: August 2026 Β· Reviewed by the AI Toolbox editorial team.
Frequently asked questions
Degrees or radians?
Choose with the toggle. Degrees is the default for everyday trig; radians for advanced math.
Does it follow order of operations?
Yes β it respects parentheses and standard precedence (PEMDAS/BODMAS).
Can I type on my keyboard?
Yes β type numbers and operators directly; the result updates live.
Is it safe / private?
Yes β it uses a custom math parser (no eval) and runs entirely in your browser.