NOR (Not OR) outputs 1 only when ALL input bits are 0. If any input bit is 1, the output is 0. It is the complement of OR and, like NAND, is a universal logic gate.

How do I NOR hex values?

Set Input Base to Hex, paste your hex values one per line, and click Calculate NOR. Results appear in all bases.

NOR Calculator — Bitwise NOR Online

How to Use NOR Calculator

Paste at least two values — one per line, or separated by commas, semicolons, or spaces.
Set Input Base or leave on Auto Detect.
Enable Show Intermediate Results to trace each NOR step.
Click Calculate NOR — results appear in Binary, Octal, Decimal, Hex and ASCII.

NOR (Not OR) outputs 1 only when ALL input bits are 0. As soon as any input bit is 1, the output is 0. This is the complement of OR: A NOR B = NOT(A OR B) = ~(A | B).

NOR Truth Table

A	B	A NOR B
0	0	1
1	0	0
0	1	0
1	1	0

NOR as a Universal Gate

Like NAND, NOR is a universal gate — any logic circuit can be built from NOR gates alone:

NOT A = NOR(A, A)
A OR B = NOR(NOR(A, B), NOR(A, B))
A AND B = NOR(NOR(A, A), NOR(B, B))

Frequently Asked Questions

What is NOR?

NOR (Not OR) outputs 1 only when ALL input bits are 0. If any input bit is 1, the output is 0. It is equivalent to NOT(A OR B).

Why is NOR a universal gate?

Any boolean function can be built using only NOR gates. This makes NOR (alongside NAND) one of the most fundamental gates in digital electronics.

What is the difference between NOR and NAND?

NOR = NOT(A OR B) — outputs 1 only when ALL inputs are 0. NAND = NOT(A AND B) — outputs 0 only when ALL inputs are 1. Both are universal gates.

How does multi-input NOR work?

NOR is applied successively: NOR(A, B) first, then NOR(result, C). Enable Show Intermediate Results to see each step.

NOR Calculator online

Bitwise NOR — Binary, Octal, Decimal, Hex & ASCII — multi-input