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Bitwise NOR Calculator

Operand A
Operand B
expression

0x000000F0 NOR 0x0000000F = 0xFFFFFF00

32-bit result

1111 1111 1111 1111 1111 1111 0000 0000

Unsigned decimal
4294967040
Hexadecimal
0xFFFFFF00
Octal
0o37777777400
Go to the full Bitwise Calculator

Bitwise NOR calculator

Apply NOR to two integers and read the result as unsigned decimal, hexadecimal, octal, and 32-bit padded binary. NOR computes OR on both 32-bit words and then inverts every bit in the result.

Clearing multiple bits

NOR is one way to force a set of bits to zero while also inverting everything else. In software it is mostly encountered when translating hardware logic descriptions directly into code, or when working with RISC instruction sets that expose NOR as a native operation.

Fixed 32-bit word

The inversion step makes the word size critical. This page fixes the word at 32 bits, so all results reflect a 32-bit unsigned NOT applied after OR. Input accepts decimal, hexadecimal (0xFF), binary (0b10110010), and octal (0o377) automatically. For a different word size, use the full Bitwise Calculator.

Frequently Asked Questions

NOR is the inverse of OR. It returns 1 only if both corresponding bits are 0. The final value depends on the selected word size because the result passes through a NOT step.

It outputs 1 only when both inputs are 0. If either or both inputs are 1, the output is 0.

XOR returns 1 when the inputs are different. NOR returns 1 strictly when both inputs are 0. They serve entirely different logical purposes.

Specific bitwise operations

Full Bitwise Calculator tool

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