Calculate expressions with parentheses, powers, roots, logarithms, and trigonometry in degrees or radians.
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In degree mode, sin(30) + sqrt(9) gives 3.5. The expression 2^3^2 gives 512.
A restricted expression parser applies parentheses, functions, postfix factorial and percent, powers, unary signs, multiplication and division, then addition and subtraction. Powers associate to the right, so 2^3^2 means 2^(3^2); -2^2 means -(2^2).
Results use floating-point arithmetic and display up to 12 significant digits. Percent always divides by 100: 100+10% is 100.1, not 110. This is a real-number calculator, not a symbolic or complex-number solver.
Use this calculator when a task combines arithmetic, powers, roots, logarithms or trigonometry. Start by writing the full expression, including multiplication signs and parentheses. For example, the hypotenuse of a right triangle with sides 3 and 4 is sqrt(3^2+4^2), which returns 5. A parenthesized expression makes the intended order easier to check than entering a sequence of intermediate answers.
The percent key divides its preceding value by 100. To increase 80 by 15%, enter 80*(1+15%), giving 92. To reduce it by 15%, enter 80*(1-15%), giving 68. For trigonometry, sin(30) in degree mode is 0.5; sin(pi/6) in radian mode is also 0.5. Changing the angle mode changes how the expression is interpreted, so calculate again after changing it.
The displayed answer is rounded to at most 12 significant digits. This is appropriate for numerical estimates, but it does not prove an identity or provide exact symbolic fractions. Inputs such as sqrt(-1), ln(0) and 1/0 have no supported finite real result. A zero power, including 0^0, follows the calculator’s numerical convention and returns 1; this does not define an indeterminate limit in calculus.
| Example | Result |
|---|---|
2^3^2 | 512 |
-2^2 | -4 |
(-2)^2 | 4 |
100+10% | 100.1 |
100*(1+10%) | 110 |
5! | 120 |
ln(e) | 1 |
Choose degrees for angles such as 30 or 90, or radians for values involving pi. The mode also controls inverse trigonometric results.
Write multiplication explicitly, such as 2*pi or 3*(4+5). Use ln(x) for natural logarithms and log(x) for base 10. Functions require parentheses; scientific notation such as 1e-3 is supported.
Check syntax and function domains. Division by zero, square roots of negative numbers, nonpositive logarithms, and non-finite results are rejected. Factorials accept integers from 0 to 170; expressions are limited to 300 characters and bounded nesting.
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