Scientific Calculator

Build an expression using the buttons or your keyboard, then press = or Enter to evaluate it. It follows the correct order of operations (PEMDAS), supports parentheses, exponents, roots, logarithms, and trigonometric functions, and shows your running expression above the result. Press AC to clear or the backspace key to delete the last entry.

Both. Use the DEG / RAD toggle at the top left to switch modes. In DEG mode, trigonometric functions like sin, cos, and tan interpret their input as degrees; in RAD mode they use radians. The inverse functions (sin⁻¹, cos⁻¹, tan⁻¹) return their answer in the selected mode as well.

It follows standard mathematical order of operations (PEMDAS/BODMAS): parentheses first, then exponents and roots, then multiplication and division, then addition and subtraction. Exponents are evaluated right to left, so 2^3^2 = 2^9 = 512. Use parentheses whenever you want to force a different order.

Trigonometry (sin, cos, tan and their inverses), natural log (ln), base-10 log (log), square root (√), exponent (x^y), factorial (x!), percentage (%), the constants π and e, and Euler exponential (eˣ). It also keeps the previous result in the ANS key so you can chain calculations.

Yes. Everything runs entirely in your browser using a built-in math parser — no calculation is ever sent to a server, stored, or tracked. It works offline once the page has loaded.