Trigonometry, logarithms, exponents, roots and factorials — a full scientific calculator free in your browser. Keyboard supported.
Tap the buttons or type with your keyboard. Switch between DEG and RAD for angle mode.
Yes — sin, cos, tan, ln, log₁₀, powers, roots, factorials, π and e, plus memory keys.
Yes — digits, + − * / ( ) . and Enter work, Backspace deletes.
Yes, 100% free, no signup, runs entirely in your browser.
This free online scientific calculator handles the math your basic calculator cannot: trigonometry (sin, cos, tan), logarithms (ln, log base 10), exponents, roots, factorials, and the constants pi and e. It is ideal for students, engineers, and anyone working through homework or technical problems on a phone or computer.
A common mistake is solving trig problems in the wrong angle mode. Tap DEG for degrees or RAD for radians before calculating sin, cos, or tan — the mode is shown clearly on the keypad. You can type with your keyboard too: digits, + - * / ( ) . and Enter all work, and Backspace deletes the last character. Memory functions (M+, M-, MR, MC) let you store intermediate results for multi-step problems. Everything runs locally in your browser, so your calculations are private and the tool works offline once loaded. 100% free, no signup.