Octal to Binary Converter: Your Quick Conversion Tool

Convert octal numbers (base 8) to binary numbers (base 2). Octal uses digits 0-7, while binary uses only 0 and 1.

Conversion Details

Quick Reference

Octal Binary Decimal
0 000 0
1 001 1
2 010 2
3 011 3
4 100 4
5 101 5
6 110 6
7 111 7

How It Works

This octal to binary tool converts base 8 numbers to base 2. It checks your input and shows clear results.

How to use this tool

  1. Type an octal number in the box.
  2. Use digits 0 to 7 only.
  3. Click Convert to Binary.
  4. Or press Enter to run it.
  5. Watch the result update as you type.

Input field

What the output shows

Why You'll Love It

This tool makes octal to binary work fast and reliable. You get instant checks and simple steps.

Quick examples

Easy and Fast

Type a number and click convert. You can press Enter for speed. The tool also updates while you type. It checks your input and shows a clear message for other characters.

Need a reminder chart? The Quick Reference table lists 0 through 7 with their three bit forms.

Accurate Results

The binary line groups bits in fours, which helps with long values. The decimal value gives a simple cross check. Conversion Details list each digit map, then show the final bits without leading zeros.

Very long inputs may exceed JavaScript number limits. For long values, rely on the Result line in Conversion Details, since it builds the bits per digit.

What You Need to Know

Keep these points in mind for clean octal to binary work.

Final Thoughts

Use this octal to binary converter for fast checks and clear steps. It keeps your math tidy and your focus sharp. Try a few values and see how the bits line up with ease.