Binary to Octal
Binary to Octal Converter
Binary to Octal Overview
A Binary to Octal Converter is a tool that converts numbers from the binary number system (base-2) into the octal number system (base-8). This conversion is widely used in computer science and digital electronics to simplify long binary numbers by grouping bits.
Binary only uses two digits: 0 and 1, while octal uses eight digits: 0ā7.
Conversion Principle:
To convert binary to octal, group the binary digits in sets of three (starting from the right) and convert each triplet into its octal equivalent.
Example:
Binary 110101 ā Grouped as 000 110 101 ā
= (000 ā 0), (110 ā 6), (101 ā 5)
ā Octal = 065
Common Uses for Binary to Octal Conversion:
- Computer Programming: Shortens binary representation for readability in source code.
- Digital Circuit Design: Eases visualization of binary states.
- Operating Systems: Octal permissions are used in UNIX/Linux file systems.
- Data Representation: Used in machine code, assembly language, and debugging.
- Education: Helps students understand relationships between number systems.
Key Features of Binary to Octal Converter:
- Accurate Grouping: Precisely splits binary digits into groups of three.
- Real-Time Output: Instant display of octal value from binary input.
- Handles Leading Zeros: Auto-fills with zeros for proper grouping.
- Fractional Support: Also converts binary fractions into octal.
- Simple UI: Easy for beginners, programmers, and engineers.
- Reliable: Supports large binary numbers without error.
The Binary to Octal Converter helps transform complex binary strings into compact octal representations.
How It Works
Enter a Binary Number:
Example: 10110111
Auto Grouping:
Binary digits are grouped into sets of 3 from the right (e.g., 010 110 111).
Conversion:
Each group is translated into a single octal digit.
View Octal Result:
Displayed as 267 in this case.
Use Across Applications:
Ideal for coding, circuit design, file permissions, and learning.
Examples
Formula:
Group binary digits in triplets (from right to left), then convert.
Example 1: Binary: 1010
ā Pad with zeros: 001 010
ā 001 = 1, 010 = 2 ā Octal = 12
Example 2: Binary: 11001101
ā Group: 000 110 011 101
ā Octal: 0 6 3 5 ā 0635
Example 3 (with fraction): Binary: 1011.101
ā Integer part: 1011 ā 001 011 ā 1 3
ā Fraction part: 101 ā 101 000 ā 5
ā Octal = 13.5
Reference Tables
Binary
Octal
000
0
001
1
010
2
011
3
100
4
101
5
110
6
111
7
Steps to Convert Binary to Octal:
- Start with the binary number.
- Add leading/trailing zeros to make full 3-bit groups.
- Group bits in sets of three from right (for integers) or left (for fractions).
- Convert each group to an octal digit.
Formula:

Binary (base-2) ā Octal (base-8) = Group of 3 bits ā 1 octal digit
Additional Information
A Unique Explanation for the Binary to Octal Converter:
Computers process information in binary (base-2), but these sequences can get very long and hard to read. Octal (base-8) helps simplify binary strings into shorter, more manageable numbers by grouping 3 bits per digit.
This is especially useful when working in assembly language, machine-level programming, or hardware debugging where large binary codes need to be compressed without losing meaning.
Example:
Binary: 11110000
ā Group: 011 110 000
ā Octal: 3 6 0
Binary to Octal Conversion Table
Binary
Octal
10
2
101
5
1111
17
1001
11
10101
25
110110
66
1000000
100
FAQs
1. How does binary to octal conversion work?
Group binary digits in sets of three (from right to left), and convert each group into an octal digit.
2. Why convert binary to octal?
Octal is shorter and easier to interpret than binary, especially in computing and coding.
3. What if the binary number isn't a multiple of 3 digits?
Add leading zeros for integers or trailing zeros for fractions to complete triplets.
4. Can I convert binary fractions to octal?
Yes, group the fractional part in 3-bit segments from left to right.

5. Is this used in real-world applications?
Yes, especially in Linux permissions, assembly code, bitmask operations, and digital circuits.