Convert a Octal Number to Binary Number

Convert a Octal Number to Binary Number instantly. Type or paste any octal value like 7251 and see the binary result update live. You can space out each 3-bit group and even view the conversion steps if you want.

Paste your input above or import a file below.
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Supported file types: .txt, .csv, .tsv, .log
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Options
Add space between binary groups
Show conversion steps

How to Use:

  1. Enter an octal number into the input box, like 7251. It should only contain digits 0–7.
  2. Use the toggles in the Options box to customize the result:
    • Add space between binary groups: Adds a space between each 3-bit group.
    • Show conversion steps: Displays how each octal digit converts to binary.
  3. Your binary output updates live on the right. A blue border flash shows it’s updated.
  4. Use Copy Output to copy it, or Export to File to save the result.
  5. Use Clear All to reset everything.

You can also import a .txt, .csv, or .log file that contains octal numbers using the Choose File button below the input.

What Convert a Octal Number to Binary Number can do:

Convert a Octal Number to Binary Number transforms any valid octal input into binary with real-time formatting and live feedback. Each octal digit becomes a 3-bit binary group. You can separate each group with a space for easier reading, or turn on step mode to see the conversion line-by-line. All input is sanitized to exclude invalid characters, and the output includes a dynamic character count so you can track result length at a glance.

The tool supports pasting, typing, or uploading input files, and works instantly on change.

Example:

Input:

7251

Settings: Add space between binary groups: OFF, Show conversion steps: OFF

Output:111010101001

With Show Steps ON:

111010101001

Steps:
7 → 111
2 → 010
5 → 101
1 → 001

Octal to Binary Conversion Table:

This table shows how octal (base-8) numbers convert to their binary (base-2) equivalents. Each octal digit maps directly to a 3-bit binary value, making this conversion ideal for programming, embedded systems, and digital logic.

Octal NumberBinary ValueExample Use
0000Binary zero
7111Max single octal digit
101000First two-digit octal
171111Low byte config
2010000Power of two marker
1001000000Octal base 64
1441100100Decimal 100
37711111111Max 8-bit byte
400100000000Overflow into 9 bits
7251111101010001Sample conversion

Common Use Cases:

Convert a Octal Number to Binary Number is perfect for programmers working with file permissions, embedded systems, or digital electronics. You can verify bit-level values, convert octal-based configurations, or just learn how the bases relate. The toggleable formatting and live output make it fast, readable, and flexible.

Useful Tools & Suggestions:

Binary is a great stepping stone once you’ve got that, Convert a Binary Number to Hex Number helps you cleanly shift to base 16. And if you want to bring the number back to a more familiar form, Convert a Octal Number to Decimal Number is the way to go.

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