EVERYDAY CALCULATORS
Scientific Calculator — Trig, Logs, Powers, Roots
Free online scientific calculator with trigonometry, logarithms, powers, roots, and parentheses, evaluated by a safe parser in your browser. No signup.
Vos fichiers ne quittent jamais votre appareil.
A scientific calculator that evaluates whole expressions rather than one operation at a time. Type something like sin(30) + 2^4 × log(100) and it works through the operators in the correct order, respecting parentheses, so you can build a calculation up naturally.
The expression is read by a safe math parser in your browser — not by executing arbitrary code — so it is both private and secure.
What it supports
- Trigonometry — sine, cosine, tangent and their inverses (check whether the mode is degrees or radians; sin(30) is 0.5 in degrees but about −0.988 in radians).
- Logarithms — log for base-10 (log(100) = 2) and ln for natural, base e (ln(e) = 1). For another base, use log_b(x) = ln(x) ÷ ln(b).
- Powers and roots — ^ for powers (2^10 = 1024) and sqrt() for square roots; a cube root is x^(1/3).
- Grouping and constants — parentheses for precedence, plus pi and e.
Frequently asked questions
- Does it follow order of operations?
- Yes: parentheses first, then powers, then multiplication and division, then addition and subtraction. So 2 + 3 × 4 gives 14, not 20.
- Do the trig functions use degrees or radians?
- The interface shows the current mode, and it matters a great deal — the same input gives very different answers in each. Check the mode before trusting a trigonometric result.
- Is it safe to evaluate expressions here?
- Yes. It uses a dedicated math expression parser, not a general code evaluator, so it only ever does arithmetic. Nothing is uploaded and it runs entirely in your browser.