Octal Converter
Convert between octal and other number systems
Convert between octal and other number systems. Key features include Octal to decimal and Decimal to octal. Use it for encoding, decoding, and format conversion. All processing runs locally in your browser. Your files and text are not sent to Tool-web's server.
Encrypted with HTTPSProcessed in your browser
All processing runs locally in your browser. Your files and text are not sent to Tool-web's server.
Actions:
How to Use
- Enter a value in any number system
- Select the source and target formats
- View the conversion instantly
- Copy the result
Features
- Octal to decimal
- Decimal to octal
- Octal to binary
- Octal to hex
- Grouped octal display
Frequently Asked Questions
When is octal used?
Octal is commonly used in Unix file permissions (chmod) and some legacy computing systems.
How do I read Unix permissions in octal?
Each digit represents read(4), write(2), and execute(1) permissions. chmod 755 means rwxr-xr-x.
Does it handle octal with leading zero prefix?
Yes. The tool accepts both 0-prefixed and unprefixed octal numbers.
What encoding tools are available?
We offer Base64 encoder/decoder, URL encoder/decoder, hash generator (MD5, SHA), XOR encoder, ROT13, Caesar cipher, and more.
Are these encoding tools free?
Yes. Every encoding tool is free and requires no account, installation, or usage limits.
Is my data secure during encoding?
All encoding and decoding happens in your browser. No data is ever sent to external servers, making it safe for sensitive information.
Do the tools support Unicode?
Yes. All tools handle UTF-8 encoded text including non-ASCII characters, emoji, and international text correctly.
Privacy & Security
All processing happens entirely in your browser using client-side JavaScript. Your files and text are not uploaded to Tool-web's server.
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