Scientific calculator

Evaluate arithmetic, powers, roots, logarithms and trigonometric functions with a safe local parser. Choose degrees or radians and review alternate number formats.

Supported scientific calculator syntax

Type	Syntax	Example
Arithmetic	+ − * /, parentheses and implicit multiplication	2(3+4)
Powers and roots	^, sqrt, cbrt and reciprocal through division	sqrt(81)+2^5
Trigonometry	sin, cos, tan, asin, acos and atan	sin(30) in degree mode
Logarithms	log base 10, natural log ln, and exp	ln(e)
Other functions	abs, floor, ceil and round	abs(-7.5)
Constants and postfix	pi, e, ans, factorial ! and percent %	5!+10%

Exponentiation is right-associative: 2^3^2 means 2^(3²). Unary minus follows standard precedence, so -2^2 equals −4. A postfix percent divides the preceding value by 100; therefore 200*10% equals 20.

How the calculation works

The calculator tokenizes the expression, inserts supported implicit multiplication, builds a syntax tree and evaluates that tree in the browser. It does not execute typed JavaScript. Degree mode converts trigonometric inputs to radians and converts inverse-trigonometric outputs back to degrees.

Scientific notation uses a power of ten. Engineering notation adjusts the exponent to a multiple of three. Both alternate formats are generated from the same unrounded binary floating-point result.

Checked examples

Expression	Mode	Expected result
2+3*4	Either	14
2^3^2	Either	512
5!	Either	120
sin(30)	Degrees	0.5
sin(pi/2)	Radians	1
log(1000)+ln(e)	Either	4
2pi	Either	2π ≈ 6.283185307
200*10%	Either	20

Limits: Results use JavaScript double-precision floating-point arithmetic and are approximate. Factorials accept integers from 0 through 170. Real-number domain rules apply: division by zero, square roots of negative numbers and logarithms of nonpositive numbers are rejected. This tool is not a symbolic algebra or arbitrary-precision system.

Frequently asked questions

Does this calculator graph functions?

No. Use the Graphing Calculator to plot one or more functions, generate a table and estimate visible roots.

Can I switch between degrees and radians?

Yes. The angle selector affects trigonometric and inverse-trigonometric functions. Other operations are unchanged.

What does Ans mean?

ans inserts the latest successful result from the current page session. Reset clears the result, history and memory.

Is scientific notation input accepted?

Yes. Values such as 1.2e-6 are accepted. Use the dedicated Scientific Notation Calculator for exact decimal-string conversion and arithmetic with extremely large exponents.

Scientific Calculator: Trigonometry, Logs and Powers