Text (UTF8) to Octal Converter

Convert text to octal (UTF‑8)

This Text (UTF‑8) to Octal converter turns readable text into octal byte values.

Under the hood it works like this:

1. Your text is encoded into UTF‑8 bytes.
2. Each byte (0–255) is displayed in octal (base‑8).

So this is a text/byte converter — not an octal calculator for big integers.

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How to use it

1. Paste or type your text into the input.
2. Choose Encode (text → octal).
3. Select Octal as the output format.
4. Copy the result.

Output format

Octal output is shown as space‑separated byte values.

Each value represents one byte (0–377 in octal).

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Examples

ASCII example

ASCII characters are typically 1 byte each in UTF‑8.

Text:  Hello
Octal: 110 145 154 154 157

Non‑ASCII example (UTF‑8 multi‑byte)

Many characters use multiple bytes in UTF‑8.

Text:  Ω
Octal: 316 251

Emoji (often 4 bytes)

Emoji commonly encode as 4 UTF‑8 bytes, so you’ll see four octal values.

Text:  🙂
Octal: 360 237 231 202

If the output looks “longer than expected”, it’s usually because your input contains multi‑byte characters.

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What “octal bytes” means

A byte can hold values from:

• 0–255 in decimal
• 00–ff in hex
• 0–377 in octal

This converter outputs octal values in that byte range.

Tip: If you ever see values above 377, that’s not a single byte — it’s either the wrong format, or it’s being treated as an octal number rather than octal bytes.

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Common octal styles you might see

Different systems represent octal bytes in slightly different ways. This tool outputs a clean default (space‑separated values). If your target expects another style, you can usually transform it:

• 3‑digit padded bytes (common in escapes): 110 145 154 → 110 145 154 (already 3 digits for ASCII) but values like 7 may need 007
• Leading zero style: 110 → 0110 (sometimes used, depending on context)
• Backslash escapes (C-style / shell-style): \110\145\154\154\157

If your destination requires exact 3‑digit escapes (\ooo), make sure every byte is padded to 3 digits (e.g., 7 → 007).

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Troubleshooting

“Why did one character become two or more octal values?”

UTF‑8 is variable length:

• ASCII letters/digits/punctuation → usually 1 byte
• Greek / accented characters → often 2 bytes
• Emoji → often 4 bytes

So one “character” is not always one byte.

“I expected something like chmod 755”

That’s a numeric octal use case (Unix permissions). This tool is different: it converts text into bytes and then expresses those bytes in octal.

“My decoder rejects the output”

Many decoders expect strict formatting. Check that:

• values are separated consistently (spaces or newlines)
• each value is in the byte range 0–377
• you are not mixing octal with hex/binary in the same line