Binary / Hex / ASCII — Convert between binary, hex, decimal, ASCII

Working with low-level data, network protocols, memory addresses, color codes, or character encoding means constantly translating between binary, hexadecimal, decimal, and ASCII. Doing this in your head for multi-byte values is slow and error-prone. A dedicated converter handles the tedious part — enter a value in any format and all other representations update simultaneously, with no submit button and no page reload required.

This converter handles both single-value and multi-character text conversion. For individual numbers, enter a binary string, hex value, decimal number, or octal value and see all equivalent representations at once. For text strings, switch to Text mode and enter any ASCII or UTF-8 string to get the full byte-level breakdown: each character displayed as its decimal code point, hexadecimal byte, binary representation, and octal value side by side. This is essential when debugging encoding issues in file parsers, protocol implementations, or terminal output where invisible bytes cause unexpected behavior.

Common programming and networking uses. Color codes are written in hex (#FF5733) — convert to decimal RGB values (255, 87, 51) for use in code that expects integer color channels. Memory addresses are displayed in hex by debuggers and disassemblers — see the binary representation to understand which bits are set. ASCII encoding tables map printable characters to decimal codes — verify or look up any code point without memorizing the table. Network protocols use hex dumps in packet captures — paste space-separated hex bytes to decode the ASCII text they represent. Bit masks and flag values are written in binary or hex — convert to decimal to compare against integer literals in your code. The built-in ASCII reference table covers printable characters, digits, uppercase letters, lowercase letters, and common control codes — all organized by category.

Pairs well with Number Base Converter for multi-base arithmetic across bases 2 through 36, and Hash Generator for checksums and cryptographic digests.