Boole

Boole[expr] yields 1 if expr is True and 0 if it is False.

Examples

Convert boolean to number:

Boole[True]
(* 1 *)

Boole[False]
(* 0 *)

Use in calculations:

Boole[5 > 3] + Boole[2 > 4]
(* 1 *)

Please visit the official Wolfram Language Reference for more details.