Hex Encoder

What is hexadecimal encoding?

Hexadecimal (base 16) represents numbers using sixteen symbols: the digits 0-9 and the letters a-f. Because each byte holds a value from 0 to 255, every byte maps neatly to exactly two hex digits — for example, the letter H is the byte 72, which is 48 in hex. Encoding text to hex first turns the text into UTF-8 bytes, then writes each byte as a two-digit hex value. It is a compact, human-readable way to inspect the raw bytes of a string, debug binary data, or share values that must survive plain-text channels.

How to convert text to hex online

Converting with ToolsSoup takes just a few seconds:

1. Type or paste your text — or a hex string — into the input box.
2. Click Encode to Hex to turn each byte into a two-digit hex code, or Decode from Hex to turn hex back into text.
3. Copy the result with one click and paste it wherever you need it.

What hex format does it use?

When encoding, each byte becomes a lowercase two-digit hex value and the bytes are separated by spaces — for example, Hi becomes 48 69. When decoding, the tool is forgiving: it accepts hex separated by spaces, commas, or new lines, ignores any 0x prefixes, and works in upper or lower case. It only needs an even number of hex digits because every byte is two digits, so an odd count or any character outside 0-9 and a-f is reported as an error.

Why use this hex encoder?

• 100% free with no ads, sign-up, or usage limits.
• Runs entirely in your browser — your text is never uploaded to a server.
• Encodes text to space-separated two-digit hex and decodes it back again.
• Handles UTF-8, so accented letters, symbols, and emoji round-trip correctly.
• Accepts hex with spaces, commas, new lines, or 0x prefixes when decoding.
• Works offline once the page has loaded.

Frequently asked questions