Truth Table Generator
Generate truth tables from Boolean expressions with AND, OR, NOT, XOR, NAND, and NOR operators. Instant, accurate, and fully offline in your browser.
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What is Truth Table Generator?
Truth Table Generator is a browser-based tool that builds a complete truth table from any Boolean expression. Type a logical expression using AND, OR, NOT, XOR, NAND, and NOR operators with parentheses, and the tool parses it with correct precedence, lists every combination of input variables, and shows the output for each row. Ideal for verifying digital logic circuits, studying Boolean algebra, and debugging combinational logic — all computed locally with no uploads.
Key Benefits
- Instant truth tables for any Boolean expression
- Supports AND, OR, NOT, XOR, NAND, and NOR gates
- Correct operator precedence with nested parentheses
- Live, color-highlighted output for quick verification
- Fully offline — no data leaves your browser
Common Use Cases
- •Verifying digital logic circuit designs
- •Learning and teaching Boolean algebra and logic gates
- •Debugging combinational logic for firmware and hardware
- •Checking propositional logic for exams and homework
How to Use the Truth Table Generator
- Enter an expression: Type a Boolean expression using AND, OR, NOT, XOR, NAND, or NOR, e.g. A AND (B OR NOT C). Variables are single letters like A, B, C.
- Watch the table build: The truth table renders live as you type, listing every combination of input values from 0 to 1 and the output for each row.
- Verify your logic: Read the output column to check each input combination. Green 1s and red 0s make the result easy to scan.
- Copy or clear: Use Copy to export the table as tab-separated text, or Clear to reset the expression and start over.
Key Features
- Generate complete truth tables for any Boolean expression
- Supports AND, OR, NOT, XOR, NAND, and NOR operators
- Correct operator precedence with nested parentheses
- Live table generation as you type
- One-click copy as tab-separated text
- Clear 1/0 output highlighting for quick verification
Frequently Asked Questions
What is a truth table?
A truth table is a table that shows the output of a Boolean/logical expression for every possible combination of its input variables. For n variables there are 2^n rows, each listing one input assignment and the resulting output value of the expression.
Which operators does the tool support?
The tool supports the six core Boolean operators: AND, OR, NOT, XOR, NAND, and NOR, plus parentheses for grouping. It respects standard precedence (NOT binds tightest, followed by AND, then OR/XOR) so you can write natural expressions like A AND (B OR NOT C).
How do I enter variables in an expression?
Variables are single letters such as A, B, C, and so on. Combine them with operators and parentheses, for example (A AND B) OR C. The tool detects every variable used and builds columns for each one automatically.
Does this tool send my expression anywhere?
No. All parsing and truth table generation happens entirely in your browser with no uploads and no server calls. Your expression never leaves your device, and the tool works offline once loaded.