Scientific Calculator
Calculate trigonometry, logarithms, exponents, roots, factorials, and more with this full scientific calculator. Tap or type an expression and it follows standard order of operations, with a degrees/radians toggle for the trig functions. It runs entirely in your browser — free, instant, and no sign-up.
Trig angles use degrees
Frequently asked questions
Build an expression with the number and function keys — for example sin(30) + √16 — then press =. It follows standard order of operations (parentheses, then exponents, then × and ÷, then + and −), and the DEG/RAD toggle controls how the trig functions read angles.
Sine, cosine, and tangent plus their inverses, natural log (ln) and base-10 log, square root, powers (xʸ), factorials (n!), percentages, the constants π and e, and parentheses for grouping.
Both — use the DEG/RAD toggle. In DEG mode sin(30) is 0.5, while in RAD mode angles are read in radians. Set the mode before pressing = so the trig functions read your angle correctly.
Yes — free, no sign-up, and every calculation runs in your browser, so nothing you type is sent anywhere.
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