🧮 Scientific Calculator
Scientific Calculator
Full-featured calculator with trig, logarithms, exponents, roots, constants, memory, and calculation history.
FAQ
What is the difference between DEG and RAD mode?
DEG (degrees) and RAD (radians) are two ways to measure angles. In degrees, a full circle is 360°. In radians, a full circle is 2π (about 6.283). Most everyday uses like navigation or geometry use degrees. Radians are standard in mathematics and physics, especially in calculus. Switch modes using the DEG/RAD button before using trig functions.
How do I use the memory functions?
M+ adds the current display value to memory. M− subtracts it. MR recalls the stored value to the display. MC clears memory. The M indicator lights up in the display when a value is stored. Memory persists through calculations until you press MC.
What does the INV button do?
INV (inverse) toggles the trig functions to their inverse equivalents: sin becomes sin⁻¹ (arcsin), cos becomes cos⁻¹ (arccos), tan becomes tan⁻¹ (arctan). Similarly, log becomes 10^x and ln becomes e^x. Press INV again to return to normal mode.
How do I calculate factorial?
Enter a whole number, then press the n! button. For example, 5! = 5 × 4 × 3 × 2 × 1 = 120. Factorials grow extremely fast — 20! is already over 2 quadrillion. Values above 170! exceed JavaScript's number range and will return Infinity.
What constants are available?
The calculator includes π (pi ≈ 3.14159), e (Euler's number ≈ 2.71828), and Ans (the last calculated answer). Press these to insert the value directly into your calculation.
Can I use keyboard input?
Yes — the calculator supports full keyboard input. Use number keys for digits, operators (+, -, *, /), Enter or = to calculate, Escape or Delete to clear, and Backspace to delete the last character. Parentheses ( and ) work directly. This makes it fast for desktop users.