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NOR Calculator.

Evaluate the logical NOR operation for two binary inputs.

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01

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nor: 1

nor

1.000000

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Use Cases

Digital logic design

Quickly verify NOR gate outputs when designing or troubleshooting digital circuits.

Example: Check NOR output for A=0, B=1 → 0

Boolean algebra practice

Use it to check your manual calculations for NOR operations in logic exercises.

Example: Confirm that NOR(0,0) = 1

Frequently Asked Questions

What does the NOR calculator do?
This calculator evaluates the logical NOR operation for two binary inputs, A and B. It returns 1 only when both inputs are 0, and 0 otherwise.
How do I use the NOR calculator?
Enter 0 or 1 for input A and input B, then click calculate. The result will show the NOR output based on the truth table.
What is the truth table for NOR?
For inputs A and B: (0,0) → 1, (0,1) → 0, (1,0) → 0, (1,1) → 0. The output is 1 only when both inputs are 0.

Tips & Common Mistakes

Tips

  • Remember: NOR is the negation of OR. The output is 1 only when both inputs are 0.
  • Inputs must be exactly 0 or 1. Any other value will not produce a valid result.
  • Use this calculator to double-check your truth tables or logic gate simulations.

Common Mistakes to Avoid

  • Confusing NOR with OR: OR outputs 1 if any input is 1, but NOR outputs 1 only when both are 0.
  • Entering values other than 0 or 1, such as true/false or text, which the calculator does not accept.

Last updated: August 13, 2026