🔢Programmer's Calculator

Convert between binary, octal, decimal, and hexadecimal with bitwise operations.

From Base

To Base

Input Number

About Programmer's Calculator

Convert numbers between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) systems instantly. Enter a value in any base and see all other representations update in real time. Also supports bitwise operations like AND, OR, XOR, and NOT for low-level programming tasks.

How to Use Programmer's Calculator

1
Enter a number
Type a number in any supported base — binary, octal, decimal, or hexadecimal.
2
View conversions
See the equivalent values in all four number bases update in real time.
3
Perform bitwise operations
Use the bitwise operation buttons to perform AND, OR, XOR, NOT, and shift operations.

Common Use Cases

Converting hex color codes to decimal values
Working with binary flags and bitmasks in code
Understanding network subnet masks in different bases
Debugging low-level protocol data and memory addresses

Frequently Asked Questions

What number bases are supported?

The calculator supports binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) — the four systems most commonly used in programming.

What are bitwise operations?

Bitwise operations (AND, OR, XOR, NOT, shift) manipulate individual bits of binary numbers. They are used in low-level programming, permissions systems, network masks, and performance-optimized algorithms.

Can I enter negative numbers?

The tool works with unsigned integer values. For negative number representation, you can manually apply two's complement to the binary output.