Add Commas to an Integer

The Add Commas to an Integer tool takes any list of whole numbers and formats them with thousands separators turning 1234567 into 1,234,567. It’s fast, works live in your browser, and helps make large numbers easier to read or publish.

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 non-integers
Maximize output

How to Use:

  • Paste or type your integers into the input box one per line.
  • Or import a file using the Choose File button below the input.
  • Toggle options under the Options box:
    • Ignore non-integers – skips invalid or text-based lines.
    • Maximize output – expands the output area.
  • The output updates instantly as you type or toggle settings.
  • Click Copy Output to copy results.
  • Click Export to File to save the result.
  • Use Clear All to reset everything.

What Add Commas to an Integer can do:

This tool formats integers with commas to make them easier to read. So if you’ve got values like 1000, 1000000, or 1234567890, it’ll convert them into 1,000, 1,000,000, and 1,234,567,890. It supports multi-line input and handles a long list of numbers in one go.

You can ignore invalid entries, resize the output, and use the tool entirely in-browser. It’s perfect for reports, spreadsheets, websites, and anywhere human-friendly numbers are needed.

Example:

Input:

1000
5000000
abcdef
987654321

Output (with ignore on):

1,000
5,000,000
987,654,321

Common Use Cases:

This is perfect for formatting raw data into readable numbers for web pages, emails, documents, or presentations. Whether you’re prepping stats for a client or just cleaning up output from a script it does the job fast and clean with zero setup.

Useful Tools & Suggestions:

After adding commas for readability with Add Commas to an Integer, try Remove Commas from an Integer if you need a clean, numeric version for processing. And if you’re formatting numbers further, Right-align Integers helps everything line up nicely.

Related Tools