Custom-pad a Number

Custom-pad a Number lets you define both the padding character and the target length for each number. It’s perfect for formatting IDs, aligning values, or styling numeric data. Choose any character you like asterisk, space, dot, or even a letter and apply it live.

Paste your input above or import a file below.
No file chosen
Supported file types: .txt, .csv, .log
Total items: 0
Options
Trim whitespace

How to Use:

  1. Type or paste numbers into the Input Numbers box.
  2. You can also upload a .txt, .csv, or .log file for bulk input.
  3. In the Options box:
    • Set the total length for padding.
    • Choose a single padding character (e.g. *, 0, .).
    • Enable Trim whitespace to clean up the input.
  4. Your padded output appears instantly in the preview pane.
  5. Use Copy Output to copy or Export to File to save.
  6. Hit Clear All to reset everything.

What Custom-pad a Number can do:

This tool reads each line, and if the number is shorter than your target length, it adds your chosen character to the front. It supports any visible character and works with numeric strings or alphanumeric data.

Whitespace control helps clean messy input. You can also import entire lists from files. The tool automatically displays how many items were processed and flashes the output when updated.

Example:

Input:

7
42
908

Settings: Total length: 6, Padding character: *, Trim whitespace: ON

Output:

*****7
****42
***908

Common Use Cases:

Use this when you need fixed-width numbers with special formatting. Whether you’re generating fake IDs, styling scores for UI, padding numbers for database exports, or just testing alignment, this tool gives you full control without writing a single line of code.

Useful Tools & Suggestions:

If you’re already padding numbers, Left-pad Text gives you tight control over front alignment. And when you want things to look more uniform, Generate Bold Numbers can style the digits so they pop even with extra spacing.

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