Truth Table Generator

About this calculator

A truth table lists every possible combination of true/false values for a boolean expression's variables alongside the resulting output, giving a complete and unambiguous definition of the expression's logic — for n variables there are exactly 2^n rows, so a 3-variable expression (A, B, C) produces 8 rows covering every possible input state.

This generator evaluates expressions built from AND, OR, NOT and XOR (accepting either the words or the symbols &, |, !, ^) and fills in every combination automatically. Truth tables are the basic verification tool in digital logic design and computer engineering — used to check that a circuit or boolean condition behaves as intended, to simplify expressions with Karnaugh maps, and to prove logical equivalence between two different-looking expressions.