Binary vs Hexadecimal
Binary vs hex compared — base, readability and use cases, with free converters and a number base converter.
Binary (base 2) is how computers store data; hexadecimal (base 16) is a compact, human-friendly way to write the same bits — each hex digit equals exactly four binary digits.
Binary vs Hexadecimal at a glance
| Binary | Hexadecimal | |
|---|---|---|
| Base | 2 (0-1) | 16 (0-9, A-F) |
| Digits per byte | 8 | 2 |
| Readability | Low (long strings) | High (compact) |
| Used for | Bit-level logic | Colours, memory, hashes |
When to use Binary
Use binary when you reason about individual bits — flags, masks, low-level logic.
When to use Hexadecimal
Use hex to write bytes compactly — colour codes, memory addresses, hashes.
Tools for Binary & Hexadecimal
String to Binary Converter
Convert text to 8-bit binary and back. UTF-8 aware with optional byte and nibble spacing for readability.
Open toolString to Hex Converter
Convert text to UTF-8 hex bytes and back. Pick from five separators on encode; decode auto-strips any common separator.
Open toolNumber Base Converter
Convert numbers between decimal, binary, octal and hexadecimal in a live 4-row grid. BigInt-safe with optional signed 32 / 64-bit mode.
Open toolASCII Converter
Convert characters to ASCII / Unicode codepoints in decimal, hex, binary and octal — or render a live table for any input string.
Open toolBinary vs Hexadecimal
Why is hex used instead of binary?
Hex is far shorter and maps cleanly to binary — one hex digit is exactly four bits, so a byte is two hex digits instead of eight binary ones, which is much easier to read and type.