Bitwise NOT Calculator
Calculate the bitwise NOT (complement) operation instantly. Enter a binary or decimal number and get the inverted bit result with binary, decimal, and hexadecimal output.
Binary Result: -
Decimal Result: -
Hex Result: -
How Bitwise NOT Works
The Bitwise NOT operation flips every bit in a binary number. Each 0 becomes 1 and each 1 becomes 0. It is also known as the bitwise complement operation.
Example using 8-bit value:
Original: 10101010 NOT: 01010101
The NOT operation always depends on the selected bit length because computers store numbers using fixed-size binary representations.
Bitwise NOT Truth Table
| Input Bit | NOT Output |
|---|---|
| 0 | 1 |
| 1 | 0 |
Why Bit Length Matters
Bitwise NOT works by reversing every bit. For example, the NOT result of a number can be different in 4-bit, 8-bit, or 16-bit systems.
| Bits | Example |
|---|---|
| 4-bit | 1010 → 0101 |
| 8-bit | 10101010 → 01010101 |
| 16-bit | 0000000010101010 → 1111111101010101 |
Common Uses of Bitwise NOT
- Creating binary masks in programming.
- Low-level hardware operations.
- Working with memory and registers.
- Computer graphics and embedded systems.
- Understanding two’s complement numbers.
Frequently Asked Questions
Bitwise NOT reverses all bits in a binary number. Every 0 changes to 1 and every 1 changes to 0.
In many programming languages, integers use two’s complement representation. Applying NOT changes the binary pattern and can produce negative values depending on the bit size.
Yes. The result depends on whether the calculation uses 4-bit, 8-bit, 16-bit, or another fixed binary size.
Bitwise NOT is commonly used in programming, digital electronics, hardware control, and binary data manipulation.