What operators are supported?

Addition (+), subtraction (-), multiplication (*), division (/), modulo (%), power (** or ^), and factorial (!). Standard operator precedence applies.

Can I define variables?

Yes! Use 'name = expression' syntax. Variables persist across lines, so you can build up complex calculations step by step.

What number formats are supported?

Decimal (3.14), hexadecimal (0xFF), binary (0b1010), and scientific notation (1.5e3). All are evaluated to regular numbers.

100% client-side with a custom math parser. No eval() or code execution — just pure arithmetic parsing.

Home/Math Evaluator

Math Expression Evaluator

Evaluate expressions with variables, functions (sin, cos, sqrt, log), constants (PI, E), hex, binary, factorials, and more.

Expressions

Results

// Basic arithmetic

2 + 3 * 4= 14

(10 - 2) ** 3= 512

// Variables

radius = 5radius = 5

area = PI * radius ^ 2area = 78.5398163397

// Functions

sqrt(144)= 12

sin(PI / 4)= 0.707106781187

log2(1024)= 10

// Hex & binary

0xFF + 0b1010= 265

5!= 120

Variables

radius = 5area = 78.5398163397ans = 120

Quick Reference

Operators

+ - * / arithmetic

** ^ power

% modulo

! factorial

Functions

sin cos tan

sqrt cbrt abs

log log2 log10

pow(a,b) min max

Constants

PI = 3.141593

E = 2.718282

TAU = 6.283185

PHI = 1.618034

Formats

0xFF hexadecimal

0b1010 binary

1.5e3 scientific

// # comments

How to use the Math Evaluator

1
Type expressions
Enter math expressions, one per line. Results update in real-time.
2
Use variables
Assign with x = 5, then reference in later lines: x * 2
3
Use functions
Call sin(x), sqrt(x), pow(a,b), etc. Use PI, E constants.

Frequently Asked Questions

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Last updated: February 6, 2026