๐งฎ Scientific Calculator
Trigonometry, logarithms, powers, roots and memory.
Frequently Asked Questions
How do I use the Scientific Calculator?
Choose Degrees or Radians for trig functions, then enter numbers using the on-screen buttons or your keyboard. Use the operator buttons (+, โ, ร, รท, xสธ, etc.) and function buttons (sin, cos, log, โ, etc.) to build your expression, then press = (or Enter) to see the result in the display.
What's the difference between degree and radian mode?
In degree mode, trig functions like sin, cos and tan treat the input as degrees (0โ360ยฐ). In radian mode, the input is treated as radians (0โ2ฯ). Switch modes based on what your problem expects โ most everyday angle problems use degrees.
What's the difference between log and ln?
"log" is the base-10 logarithm (logโโ), while "ln" is the natural logarithm (base e, where e โ 2.71828). Use log for base-10 calculations and ln for natural growth/decay problems.
How do the memory functions (M+, M-, MR, MC) work?
M+ adds the current result to memory, Mโ subtracts it from memory, MR recalls the stored value, and MC clears the memory. This lets you carry a running total across multiple calculations.
How do I calculate powers and roots?
Use the xสธ button for powers (e.g. 2 xสธ 3 = 8) and the โ or x^(1/y) functions for square roots and other roots. The xยฒ and xยณ buttons give quick shortcuts for squares and cubes.
How do I calculate inverse trig functions like sinโปยน, cosโปยน and tanโปยน?
Use the asin, acos and atan buttons to find the angle whose sine, cosine or tangent equals the entered value. The result is returned in degrees or radians depending on the current angle mode โ so set deg/rad mode before reading the result.
How does the factorial (n!) function work?
The fact (n!) button multiplies a number by every positive integer below it down to 1 โ e.g. 5! = 5 ร 4 ร 3 ร 2 ร 1 = 120. Factorial is only defined for non-negative integers.
What do the ฯ and e buttons do?
ฯ inserts the mathematical constant pi (โ 3.14159), used in geometry and trigonometry. The e button inserts Euler's number (โ 2.71828), the base of the natural logarithm (ln) and used in growth/decay calculations.
What do 1/x, |x| and โx do?
1/x gives the reciprocal of a number (e.g. 1/x of 4 is 0.25). |x| returns the absolute value, removing any negative sign. โx (cube root) finds the number that, when cubed, gives the entered value โ e.g. โ27 = 3.
I just need basic arithmetic โ is there a simpler calculator?
Yes โ use our Calculator for a clean, keyboard-friendly basic calculator without scientific functions.
Why does the calculator show "Error" for some inputs?
"Error" appears for operations that don't produce a real, finite result โ e.g. taking the square root of a negative number, dividing by zero, or computing a factorial above 170! (which exceeds the calculator's numeric range). Press AC to clear and try again.
Why are very long results rounded or shown in a shorter form?
Results are rounded to 12 significant digits to keep the display readable and avoid floating-point artifacts (e.g. 0.30000000000000004 shows as 0.3). This rounding only affects the displayed value, not the precision used in chained calculations.