Right-pad Integers

Right-pad Integers adds trailing characters to each number so they hit a specific length. It’s great for cleaning up lists, aligning numbers, or creating uniform outputs in fixed-width formats. You don’t need to click anything just paste and it updates live.

With flexible options, you can skip invalid input, control the padding character, and even sort or deduplicate results. It works entirely in your browser with no reloads or waiting.

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
Remove duplicates
Maximize output

How to Use:

  • Paste or type your numbers into the Input Integers box.
  • Set your padding preferences in the Options:
    • Pad to length – Choose how long each result should be.
    • Pad with – Pick a character like _ or . to fill the gap.
    • Ignore non-integers – Skips anything that isn’t a clean number.
    • Remove duplicates – Filters out repeated entries automatically.
    • Maximize output – Expands the output box for easier viewing.
  • You’ll see updated output in the Padded Output box immediately.
  • Use Copy Output to copy your results, or Export to File to save them.
  • Click Clear All to reset.
  • To import numbers, just use the Choose File button below the input box.

What Right-pad Integers can do:

Padding values to a consistent width can be useful in so many places from log files to markdown tables. This tool makes that fast. You set the width and character, and it handles every number in the list.

Rather than adjusting each line manually or running a script, you can do it right here with just a few clicks. It even handles file input, ignores broken lines, and trims duplicates if you want it to.

The output is clean, exportable, and stays live while you work.

Example:

Input:

3
25
9
400

Options:

  • Pad to length: 5
  • Pad with: _

Output:

3____
25___
9____
400__

With “Remove duplicates” ON and input repeated:

3____
25___
9____
400__

Common Use Cases:

Use it to prepare data for fixed-width formatting, visually align numbers in markdown tables, clean CSV exports, or normalize logs and test values. It’s especially helpful in any environment where spacing matters and padding keeps things clear.

Useful Tools & Suggestions:

After using Right-pad Integers, try Left-pad Integers to add space on the opposite side and keep things symmetrical. And if you’re formatting data into columns, Center Integers can help align everything with a clean visual balance.

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