Question 1

How do I write a boolean expression?

Accepted Answer

Use uppercase letters A-Z as variables. Combine them with operators: AND or & for conjunction, OR or | for disjunction, NOT or ! for negation, XOR for exclusive OR, and parentheses () for grouping. For example: A AND (B OR NOT C).

Question 2

What operators does this calculator support?

Accepted Answer

It supports AND (&), OR (|), NOT (!), XOR (^), NAND, NOR and parentheses. You can type words like AND/OR/NOT or symbols like &/|/! interchangeably.

Question 3

Why do I get an error?

Accepted Answer

Common causes are unbalanced parentheses, two operators in a row, or using lowercase letters. Only uppercase A-Z are valid variables. The tool shows the exact position of the problem.

Question 4

Does it simplify boolean expressions?

Accepted Answer

This calculator evaluates the expression and shows its full truth table, which is the first step in simplification. Reading the truth table lets you derive the simplified sum-of-products or product-of-sums form by hand.