Text to Octal
Convert each UTF-8 byte to 3-digit octal.
How to Use
- Type or paste your input on the left.
- The result appears live on the right - no buttons needed.
- Copy the output with one click.
About this codec
Convert each UTF-8 byte to 3-digit octal.
About Octal
Octal is text expressed as base-8 byte values. This tool lets you encode text into Octal instantly and entirely in your browser. It is commonly used for legacy systems and Unix file permissions.
Hi → 110 151How to use it
Type or paste your text into the box and it turns into Octal live as you type — everything runs locally in your browser. Learn more in the Knowledge Base.
Frequently Asked Questions
Does this leave my browser?
No - the conversion runs entirely in JavaScript on this page.
What does Octal look like?
Hi becomes 110 151. Octal is typically used for legacy systems and Unix file permissions.
Does my text leave my browser?
No. The Octal conversion runs entirely in JavaScript on this page — nothing is uploaded, and it works offline.
Is Octal reversible?
Yes. Octal is a lossless representation, so you can convert back and forth without losing any data.
Common Use Cases
Legacy systems and Unix file permissions
Octal is commonly used for legacy systems and Unix file permissions — produce it here in one step.
Learning & puzzles
See how text maps to Octal — handy for coursework, CTF challenges, and puzzle hunts.
Private by design
Everything runs locally in your browser, so you can paste sensitive text without it leaving your device.
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