Convert a Binary Number to Octal Number

Convert a Binary Number to Octal Number with ease. Paste in any binary string, and the tool will instantly convert it to octal format. You can pad bits, space out digits, or even show the grouped conversion steps live.

Paste your input above or import a file below.
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Supported file types: .txt, .csv, .log, .tsv
Total characters: 0
Options
Pad to full octal groups
Add space between digits
Show conversion steps

How to Use:

  1. Paste a binary number like 101110 into the input box.
  2. In the Options box, customize how the conversion works:
    • Pad to full octal groups: Adds leading zeroes so the binary divides cleanly into groups of 3.
    • Add space between digits: Separates the octal digits with spaces.
    • Show conversion steps: Outputs a step-by-step breakdown showing each 3-bit group and its octal value.
  3. Watch the output update on the right with a flashing border.
  4. Use Copy Output to grab it, or Export to File to save it.
  5. To reset everything, hit Clear All.

To convert from a file, use the Choose File button below the input and upload a plain text file with binary content.

What Convert a Binary Number to Octal Number can do:

This tool quickly transforms a binary string into an octal one. Binary input is cleaned of spaces and non-binary characters, then padded (if enabled) to ensure complete 3-bit groupings. You can output it cleanly in one string or spaced out for clarity. There’s also a toggle for displaying conversion steps, where each group of binary bits is mapped to its octal equivalent. Output is instant and dynamic, and a live character counter tracks result length.

You can also import .txt, .csv, or .log files containing binary numbers and get results right away.

Example:

Input:

101110

Settings: Pad to full octal groups: ON, Add space between digits: OFF, Show conversion steps: OFF

Output:56

With Show Steps ON:

56

Steps:
101 → 5
110 → 6

Binary to Octal Conversion Table:

This table shows how binary numbers convert to their octal (base-8) equivalents by grouping bits into 3-bit segments. It’s useful for base conversions in digital electronics, low-level programming, and number system education.

Binary NumberOctal ValueExample Use
0000Zero padded
1117Max 3-bit value
100010First 2-digit octal
111117Binary 15
1000020Binary 16
1000000100Binary 64
1100100144Binary 100
11111111377Max 8-bit byte
100000000400Binary 256
1111010100017251Sample conversion

Common Use Cases:

Use Convert a Binary Number to Octal Number for quick base conversions when working with low-level programming, networking, microcontroller logic, or just to double-check your homework. The step display is handy for learning or debugging, and the export/copy features help when you’re documenting results or generating formatted data.

Useful Tools & Suggestions:

Binary to octal is super clean since every three bits fit perfectly but if you need to take it further, Convert a Binary Number to Hex Number is a solid next step. And when you’re ready to see the actual base 10 value, Convert a Binary Number to Decimal Number gives you the straight-up number.

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