Trigonometry, logarithms, powers, roots, factorials, π and e — with a live result preview. Use the buttons or your keyboard.
This is a full scientific calculator for the work a basic one can't handle — trigonometry, logarithms, exponents, roots, factorials, and constants like π and e. You build the whole expression on one line (with parentheses, just like you'd write it), and a live preview shows the answer as you type, so you can catch a mistake before pressing equals.
It runs entirely in your browser with no sign-up and nothing uploaded, and you can drive it with your mouse or your keyboard.
INV), in degrees or radians — switch with the Deg/Rad button.ln), base-10 log, powers (xʸ and x²), square root, and reciprocal (1/x).x!), absolute value, percentages, and the constants π and e.MC, MR, M+, and M−.. + - * / ^ ( ) ! % directly.2^3^2 is 512.eval — so it's safe and predictable.Use the trig keys with the mode set to degrees or radians (the toggle is right there, and it is the classic source of wrong answers). The live preview shows the result as you build the expression.
Yes: natural and base-10 logs, arbitrary powers and roots, factorials, and the constants pi and e, covering the standard scientific keypad and then some.
Yes, keyboard input works throughout, which makes long problem sets dramatically faster than hunting on-screen keys.
Almost always the angle mode: sin(30) is 0.5 in degrees and something entirely different in radians. Check the degree/radian toggle before doubting the math.
Completely free in your browser, on any device, working offline once loaded. The forty-dollar calculator purchase can wait for exam regulations.