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Numio

Text to Hex Converter

Convert UTF-8 text into hexadecimal bytes or decode hex pairs back to text, including Japanese characters and emoji.

Mode

Input

5 chars1 lines

Result

Type or paste on the left — the result updates as you type.

Each byte uses two hex digits, with optional whitespace. This is a byte encoding, not a Unicode code-point list; invalid UTF-8 is rejected.

Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.

Format references

Tool page updated: