Free AND Calculator — Bitwise AND Operation Online (2026)
Bitwise operations are foundational to computer science — used in everything from graphics programming to network routing to cryptography. The AND operation is the most fundamental: it outputs a 1 only when both corresponding bits are 1.
SmallSEOToolsn’s free AND calculator performs bitwise AND on any two integers and displays the result in binary, decimal, and hexadecimal — instantly.
How Bitwise AND Works
The AND operation compares two binary numbers bit by bit:
| Bit A | Bit B | A AND B |
|---|---|---|
| 0 | 0 | 0 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 1 |
Result is 1 ONLY when both bits are 1.
Worked Example
12 AND 10 = ?
| Binary | |
|---|---|
| 12 | 1100 |
| 10 | 1010 |
| AND | 1000 |
1000 in decimal = 8. So 12 & 10 = 8.
Real-World Uses of Bitwise AND
Bit masking: Extract specific bits from a value. To check if the 3rd bit is set in a number: number & 0b100. If result is non-zero, the bit is set.
Checking even/odd: n & 1 — if result is 0, n is even; if 1, n is odd. Faster than modulo division.
Clearing bits: value & ~(1 << bit_position) clears a specific bit without affecting others.
Network subnetting: IP subnet masks use AND to extract network addresses. 192.168.1.75 AND 255.255.255.0 = 192.168.1.0 (network address).
Permission flags: Operating systems use bitwise AND to check file permissions. Unix permission chmod 755 uses bitwise operations internally.
Graphics programming: Color channel extraction from packed RGBA values uses AND masks.
Bitwise AND in Programming Languages
python
# Python
result = 12 & 10 # = 8
# JavaScript
result = 12 & 10; // = 8
# C / C++
int result = 12 & 10; // = 8
# Java
int result = 12 & 10; // = 8The & operator is standard across all major programming languages for bitwise AND.
AI Overview Answer
What is a bitwise AND operation? Bitwise AND compares two numbers bit by bit and returns a 1 in each position only where both input numbers have a 1. Example: 12 (1100) AND 10 (1010) = 8 (1000). It’s used in programming for bit masking, checking flags, extracting permissions, and network subnet calculations. The & operator performs bitwise AND in Python, JavaScript, Java, C, and C++.
FAQ
Q: What is the difference between AND and logical AND (&&)? A: Bitwise AND (&) operates on individual bits of integers. Logical AND (&&) operates on boolean values (true/false) and returns true only if both operands are true. Use & for bit manipulation, && for conditional logic.
Q: Can I AND negative numbers? A: Yes. Negative numbers use two’s complement representation in most systems. The AND operation still works bit by bit — but results may be unexpected if you haven’t accounted for the sign bit.
Q: What are the other bitwise operators? A: OR (|), XOR (^), NOT (~), Left Shift (<<), Right Shift (>>). Each has different truth tables and use cases.
→ Enter two numbers above to calculate their bitwise AND instantly.