Why this tool is useful
Use byte-radix output to inspect protocol payloads, verify encoding assumptions and move small UTF-8 fixtures between numeric notations.
Text & List Tools · runs locally
UTF-8 Byte Radix Converter
Represent UTF-8 bytes in binary, octal, decimal or hexadecimal and decode validated byte tokens back to text.
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How it works
TextEncoder creates bytes for encoding; decoding parses one bounded token per byte, enforces 0–255 and uses a fatal UTF-8 decoder.
Practical example
Hi in hexadecimal is 48 69; selecting binary yields 01001000 01101001.
Validation
The calculation is deterministic and explains validation errors instead of silently changing invalid input.
Privacy boundary
Input and output remain in this tab. Copy and download happen through browser APIs without a server upload.
Result passport
Every run reports its tool mode, timestamp and input/output size so transformed data can be audited.