Make All Integers Negative

Need to flip every number in a list to its negative form? The Make All Integers Negative tool does that instantly. Whether you’ve got a comma-separated set, a messy paragraph, or a chunk of log data, this tool will hunt down all the integers and convert them to negative right there on the page, no reloading.

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 integers: 0
Options
Preserve zero
Remove duplicate values
Maximize output

How to Use:

  • Paste your content into the Input Text box
  • Use Preserve zero to keep zeroes unchanged (e.g. 0 stays 0)
  • Use Remove duplicate values if you only want one of each number counted
  • Flip the Maximize output switch to give yourself more room to view the result
  • Click Convert to instantly see the transformed output
  • Use Copy Output to copy the results or Export to File to download
  • Click Clear All to reset everything
  • You can also import a file using Choose File

What Make All Integers Negative can do:

This tool scans your input for all standalone integers whether they’re positive or already negative and flips the positive ones. You can control whether zero stays untouched, and you can even de-duplicate the matches if needed. It doesn’t care about formatting it preserves your original structure, spacing, and surrounding text. It just flips the numbers and leaves the rest alone. All of it happens right in your browser with no server involved.

Example:

Input:
12, -4, 0, 23, 99

Options:
Preserve zero: On  
Remove duplicate values: Off

Output:
-12, -4, 0, -23, -99

Common Use Cases:

Whether you’re prepping test data, reversing score logs, or cleaning up positive values for analysis, this tool makes it easy. You don’t have to mess with formulas, regex, or spreadsheets just drop your content in, convert, and go. It’s also handy for processing large files without running any code.

Useful Tools & Suggestions:

If you’re using Make All Integers Negative, try Change Integer Sign to toggle values back and forth easily. And if you want to verify the transformation, Take Absolute Value of Integers gives you a quick way to compare magnitude without signs.

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