Details
Hex string encoding converts each byte of text data into its two-character hexadecimal representation (00–FF). This produces a plain ASCII string that is safe to use in contexts where raw binary data is not allowed.
For example, the text Hello encodes to 48656C6C6F. With spaces enabled, it becomes 48 65 6C 6C 6F.
Hex encoding is commonly used in debugging, network protocol analysis, low-level programming, and data inspection. Each input byte becomes two output characters, resulting in a 2× size increase.
For more compact binary-to-text encoding, Base64 achieves roughly a 4:3 ratio. For encoding text with only a few non-ASCII characters, Quoted-Printable is usually more efficient.
Hex encoding IS NOT an encryption algorithm — it is merely a data representation providing absolutely no protection!
Looking to decode hex strings instead? Use the Hex String Decoder.