Convert between binary, decimal, octal, and hexadecimal numbers
| Decimal | Binary | Octal | Hex |
|---|---|---|---|
| 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 1 |
| 2 | 10 | 2 | 2 |
| 8 | 1000 | 10 | 8 |
| 10 | 1010 | 12 | A |
| 16 | 10000 | 20 | 10 |
| 255 | 11111111 | 377 | FF |
Our free number system converter helps programmers, students, engineers, and IT professionals quickly convert between binary, decimal, hexadecimal, and octal number systems. Whether you're debugging code, studying computer science, or working on digital electronics projects, this tool provides instant conversions with automatic base detection.
Convert binary to decimal, hex to binary, octal to decimal, and all combinations between these fundamental number systems used in computing and digital technology.
Our converter intelligently detects whether your input is binary, decimal, hexadecimal, or octal, eliminating guesswork and manual base selection.
Convert between all four number systems in any direction - binary to hex, decimal to octal, hex to binary, and every combination.
Easily copy conversion results to your clipboard for use in code, documents, or calculations with our convenient copy buttons.
Get all four conversions simultaneously without multiple steps or separate calculations for each number system.
Used by developers, computer science students, electrical engineers, and IT professionals worldwide. No installation required - start converting instantly!
Binary (base-2) is the fundamental language of computers. Decimal (base-10) is our everyday number system. Hexadecimal (base-16) simplifies binary representation. Octal (base-8) is used in some computing applications and digital systems.
Our algorithm analyzes your input: numbers with only 0s and 1s are treated as binary, numbers with digits 0-7 as octal, numbers with digits 0-9 as decimal, and numbers containing A-F (along with 0-9) as hexadecimal.
Currently, this converter handles positive integers only. For negative numbers or floating-point conversions, you would need to understand two's complement or floating-point representation specific to your application.
Hexadecimal provides a compact way to represent binary data. Each hex digit corresponds to exactly four binary digits (bits), making it easier for humans to read and work with binary values, memory addresses, and color codes.