Using operators in formulas
An operator is a symbol or instruction that manipulates expressions in a formula. For example, the plus (+) operator tells FileMaker Pro to add one expression to another. FileMaker Pro has four types of operators:
Mathematical operators: (, ), +, -, /, *, ^
Comparison operators: =, , >, <, ,
You can also use <> for Not Equal To (), >= for Greater Than or Equal To (), and <= for Less Than or Equal To ().
Logical operators: AND, OR, NOT, XOR
Text operators: &, " ", \, ¶, /* */, //, ${ }
Note  For information on using variables in formulas, see Using variables.
Related topics 
About formulas