Binary to Octal Converter — Online & Free

Convert base-2 binary strings to base-8 octal digits instantly.

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Related Converters

Octal to Binary →Binary to Decimal →Binary to Hexadecimal →

Convert Binary numbers to Octal digits

This tool converts any base-2 binary number into its base-8 octal representation. The conversion groups binary bits in sets of three.

How to Convert

  1. Type a binary string in the input field.
  2. View the live base-8 octal conversion output.
  3. Click Copy to save the result.

About this Conversion

Octal is a base-8 number system using digits 0-7. Each octal digit represents three binary bits (e.g. 101 in binary = 5 in octal).

Frequently Asked Questions

Can I use octal for Unix permissions?

Yes. Unix file permissions (like 755 or 644) are represented in octal, which maps perfectly to 3-bit binary flags.