Hex Encoder / Decoder

The Hex Converter translates values between hexadecimal, decimal, binary, and plain text representations, a task that comes up constantly in programming, networking, and low-level debugging. Type a number in any supported base and instantly see its equivalent in the others, or paste plain text and convert it to its raw hexadecimal byte representation and back again. Programmers use hex conversion when reading memory dumps, inspecting binary file headers (many file formats are identified by a "magic number" at the start of the file, expressed in hex), working with color codes in CSS and design tools, decoding raw network packets, or debugging bitwise operations where binary and hex representations make patterns far more visible than decimal ever could. Electronics hobbyists and embedded developers use hex constantly when working with register values, memory addresses, and microcontroller datasheets, which almost universally document values in hexadecimal because it maps so cleanly onto binary — each hex digit represents exactly four binary bits, making it much easier to reason about than decimal. Understanding the relationship between the bases helps you use the tool more effectively. Hexadecimal uses sixteen symbols, 0 through 9 and then A through F, so a single hex digit can represent any value from 0 to 15, and two hex digits together represent a full byte (0 to 255) — which is exactly why hex is the standard way to write color codes like #FF5733 or memory addresses like 0x7FFF. Binary is the most verbose but the most literal representation, showing every individual bit, which is useful when you need to see exactly which flags are set in a bitmask. Decimal is the most familiar to humans but the least convenient for reasoning about byte boundaries or bitwise logic. When converting text to hex, the tool works through each character's underlying byte value (using UTF-8 for non-ASCII characters), which is useful for embedding raw string data into source code, configuration files, or protocol messages that expect hex-encoded payloads. Converting back from hex to text lets you decode messages, debug serial communication logs, or read hex-dumped file fragments during forensic or reverse-engineering work. This tool complements the Base64 Encoder for a different style of binary-to-text encoding, and the Binary Converter for pure base conversion without the text layer. Everything computes instantly in your browser with no network round-trip, so you can safely convert sensitive tokens, keys, or proprietary data formats without anything leaving your machine.