Reverse a Number

Reverse a Number takes each number you enter and flips its digits. It automatically removes any non-digit characters and shows the clean, reversed version. Whether you’re working with serials, testing patterns, or prepping number puzzles, this tool is fast and easy to use.

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
Keep non-digit characters
Maximize output

How to Use:

  1. Paste your numbers into the input box (one per line).
  2. Or import a .txt, .csv, or .log file using the Choose File button.
  3. Each line will be reversed only digits are kept.
  4. The reversed output updates live and appears in the output box.
  5. Use Copy Output to copy or Export to File to download.
  6. Click Clear All to reset everything.

What Reverse a Number can do:

This tool scans each line of your input, removes any characters that aren’t digits, and then reverses the digit string. For example, abc123 becomes 321. It works great for cleaning up messy inputs and focusing only on numeric sequences.

The interface updates instantly with every change and provides a real-time count of how many items were processed.

Example:

Input:

1234
908172
42abc

Output:

4321
271809
24

Common Use Cases:

Use Reverse a Number to prep reversed keys, process numeric strings, test algorithms, or analyze mirrored digit patterns. It’s a no-code utility that delivers instant results no manual cleanup required. Perfect for both casual use and technical tasks.

Useful Tools & Suggestions:

If you’re reversing digits, Rotate a Number is a nice follow-up it shifts them around without fully flipping the order. And for testing how those changes affect results, Perturb Number Digits adds even more variety to your transformations.

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