Developer tool
HEX ↔ ASCII Converter
Convert standard ASCII characters to HEX and HEX values from 00 to 7F back to ASCII locally.
Processed in your browser unless a tool explicitly says otherwise.
Use the toolNo account required
Standard ASCII supports only characters and HEX values from 00 to 7F.
This is a strict ASCII converter. Unicode text and HEX values above 7F are rejected instead of being decoded as UTF-8.
How it works
Strict 7-bit ASCII bytes.
Convert standard ASCII characters to uppercase HEX or decode HEX bytes from 00 to 7F back into plain ASCII. Unicode input and high bytes are rejected clearly.
Privacy note
Your input is processed locally and is never uploaded.