Convert Octal Base to Integers

The Convert Octal Base to Integers tool takes numbers written in base-8 (octal) and converts them into standard base-10 integers. You can paste in multiple lines of octal values, import them from a file, and instantly get the converted results. Whether you’re dealing with legacy data, Unix file permissions, or just exploring number systems, this tool gets the job done quickly and entirely in your browser.

It supports invalid input handling, output trimming, and layout control so you can stay focused on the numbers.

Paste your input above or import a file below.
No file chosen
Supported file types: .txt, .csv, .tsv, .log, .json, .xml, .md, .ini, .yaml, .yml, .html, .htm, .css
Total items: 0
Options
Ignore invalid lines
Trim leading zeros
Maximize output

How to Use:

  • Paste or type octal values into the Octal Input box, one per line
  • Use Choose File to import a text file with octal values
  • Toggle Ignore invalid lines to silently skip lines that don’t match octal format (digits 0–7 only)
  • Enable Trim leading zeros to remove padded zeroes from the converted output
  • Use Maximize output to expand the output box for longer results
  • Click Convert to update the output immediately
  • Use Copy Output or Export to File to save the results
  • Click Clear All to reset all input, output, and settings

What Convert Octal Base to Integers can do:

This tool reads each line as an octal number and returns its base-10 equivalent. It checks for valid octal digits and allows you to filter out anything that doesn’t match. The live preview keeps things quick, and you can always export the final list. It’s ideal for decoding file permissions, working with firmware data, or converting from outdated formats to readable numbers.

Example:

Input:

10
77
0042
invalid

Output:

8
63
34

Common Use Cases:

Use it to decode Unix permission bits (like 755), migrate data from systems that use octal encoding, or convert bulk logs with octal entries into decimal. It’s helpful for developers working with low-level systems, students learning number bases, or anyone needing fast, clean base conversion. Since it runs client-side, it’s private and instant.

Useful Tools & Suggestions:

After using Convert Octal Base to Integers, check out Convert Binary Base to Integers or Convert Hex Base to Integers to handle other common numeric formats. It’s useful when you’re comparing different base systems or converting between them.

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