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Octal to Text Converter

System ideaMissing a tool?

Decode UTF-8 octal bytes back to text

Decode UTF-8 octal byte groups back into text, entirely in your browser.

Text
LocalTools

Everything on this page is processed in your browser. Nothing is uploaded.

What this tool does

Each octal group from 0 to 377 is treated as one UTF-8 byte and decoded back into characters. Invalid groups, or byte sequences that are not valid UTF-8, are reported instead of producing garbled text.

How to use it

  1. Paste octal byte groups, separated by spaces or commas.
  2. Read the decoded text below.
  3. Copy the text once it looks right.

Privacy

This tool runs entirely in your browser. Your input is never uploaded, stored or shared — closing the tab removes it.

Frequently asked questions

Is my data uploaded anywhere?
No. Decoding happens with JavaScript in your browser tab, so the octal bytes never leave your device.
What is the valid range for an octal byte?
Each byte is between 0 and 377 in octal, which is 0 to 255 in decimal. Anything outside that range is reported as invalid.
What happens with invalid UTF-8 bytes?
A message explains that the byte sequence is not valid UTF-8, instead of showing corrupted or replacement characters.

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