A full scientific calculator in your browser: trigonometry, logarithms, powers and roots, π and e, keyboard support and calculation history.
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Trigonometry works in the unit you choose. In degrees, sin(30) = 0.5. In radians, sin(π/6) = 0.5. The default is degrees — switch to radians for calculus and physics.
The calculator runs entirely in your browser. Nothing you type is ever sent to any server or stored.
Yes, completely free with no sign-up, no ads and nothing to install. It runs in your browser and works offline after the page loads.
Choose DEG or RAD first, then press sin, cos or tan and enter the angle. For example, DEG + sin(30) = 0.5. For inverse functions use asin, acos or atan.
Press log for base-10 logarithm or ln for the natural logarithm, then enter the number. For any other base, use the formula log_b(x) = ln(x) ÷ ln(b), or press xʸ.
Yes. Numbers and operators work directly, Enter calculates, Backspace deletes the last character and Escape clears everything. The ^ key is the power operator.
The angle unit used by trigonometric functions. Degrees divide a circle into 360 parts (sin 30° = 0.5); radians divide it into 2π (sin π/6 = 0.5). Use RAD for calculus and physics formulas.
Only in your browser's memory for this session. Closing the tab clears it — nothing is uploaded or saved anywhere.