Text to Hex Converter
Free online text to hexadecimal converter. Instantly encode ASCII and Unicode text into hex values with space-separated or continuous output. Browser-based, no installation needed.
What is hexadecimal encoding?
Hexadecimal encoding converts each character of text into its corresponding two-digit hex value (00-FF), representing the ASCII or UTF-8 byte value. It uses 16 symbols: 0-9 and A-F.
How does text to hex conversion work?
Each character is converted to its numeric code point, then represented as a two-digit hexadecimal number. For example, "A" becomes "41" in hex, "B" becomes "42".
What output formats are available?
You can output hex values as space-separated pairs (e.g., "48 65 6C 6C 6F") or as a continuous string (e.g., "48656C6C6F").
Is my data processed securely?
Yes, all conversion happens locally in your browser. No data is sent to any server, ensuring complete privacy.
What is the difference between ASCII and Unicode hex encoding?
ASCII uses one byte (two hex digits) per character, covering 128 characters. Unicode (UTF-8) uses 1-4 bytes per character, supporting all world languages and emoji.
Can I convert hex back to text?
Yes, hexadecimal is a reversible encoding. Each pair of hex digits can be converted back to its original character using a hex-to-text decoder.
Why is hexadecimal used in programming?
Hexadecimal provides a compact, human-readable representation of binary data. Each hex digit maps to exactly 4 bits, making it easy to read and debug memory addresses, colors, and binary protocols.
How are emoji characters encoded in hex?
Emoji are multi-byte Unicode characters. For example, the smiley face emoji is encoded as "F0 9F 98 80" in UTF-8 hex, using 4 bytes instead of 1 for ASCII characters.
What is the difference between hex and Base64 encoding?
Hex encoding represents each byte as 2 hex characters (expanding data by 2x). Base64 uses 64 printable characters and expands data by about 33%, making it more efficient for transmitting binary data.
What are common use cases for text-to-hex conversion?
Common uses include debugging binary protocols, analyzing file headers, working with color codes (#FF0000), inspecting memory dumps, and encoding data for low-level programming.
Does this tool support UTF-8 multi-byte characters?
Yes, it fully supports UTF-8 encoding, including Chinese, Japanese, Korean, Arabic, emoji, and other multi-byte characters from all Unicode ranges.
How to read hex dump output?
A hex dump displays bytes as two-digit hex values. Space-separated format groups by byte for readability, while continuous format shows the raw byte stream. Each pair represents one byte of data.