Scientific Calculator
Full scientific calculator with trigonometry, logarithms, powers, roots and constants -- switch between degrees and radians.
Disclaimer: This calculator runs entirely in your browser using standard double-precision floating-point arithmetic -- results may show tiny rounding differences from an exact symbolic answer for some irrational inputs, consistent with any standard calculator.
Degrees vs Radians -- Why the Mode Toggle Matters
Trigonometric functions can be evaluated in two angle units: degrees (a full circle = 360°, the everyday unit most people learn first) and radians (a full circle = 2π, the unit used natively by JavaScript's Math library and most higher mathematics and physics). This calculator defaults to degree mode and automatically converts your input before calling the underlying trig functions, so sin(30) correctly returns 0.5 in degree mode -- entering the same expression in radian mode would instead compute sin of 30 radians, a very different result. Always check which mode you're in before trusting a trig result.
Function Reference
Beyond basic arithmetic, this calculator supports: sin/cos/tan and their inverses (sin⁻¹/cos⁻¹/tan⁻¹) for trigonometry; log (base 10) and ln (natural log, base e) for logarithms; √ (square root), x² (square), xʸ (any power), and 10ˣ/eˣ for exponents; π and e as constants; |x| for absolute value; and 1/x for reciprocal. Results are displayed to 12 significant figures of precision, matching standard scientific calculator behavior.