Find and Replace Integers

Find and Replace Integers lets you search for a specific number and swap it out with something else. It works line-by-line and updates live as you type. Whether you want to replace entire matching lines or just numbers embedded inside them, this tool gives you full control. Choose your mode, enter your replacement, and you’ll see the output update instantly.

You can import a file, paste in text, or just type. Everything happens right in your browser no uploads, no lag, and no reloads.

Paste your input above or import a file below.
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Supported file types: .txt, .csv, .tsv, .log, .json, .xml, .md, .ini, .yaml, .yml, .html, .htm, .css
Total items: 0
Options



Maximize output

How to Use:

  • Paste or type your content into the Input Text box, one line per entry.
  • Or click Choose File to import a plain text file.
  • In the Find field, enter the integer you want to replace.
  • In the Replace with field, enter the new value.
  • Select a Match type:
    • Exact match: replaces entire lines that exactly match the number.
    • Substring match: replaces that number wherever it appears in a line.
  • Toggle Maximize output to get more room to view the result.
  • The Replaced Output box updates live as you edit.
  • Click Copy Output to copy the result, or Export to File to download.
  • Click Clear All to reset all fields and settings.

Supported file types: .txt, .csv, .tsv, .log, .json, .xml, .md, .ini, .yaml, .yml, .html, .htm, .css

What Find and Replace Integers can do:

This tool is useful for all kinds of number cleanup. You can:

  • Replace specific values in log files, datasets, or text lists
  • Use substring matching to fix values embedded inside larger IDs
  • Switch all exact matches to new codes or placeholders
  • Edit bulk text quickly without writing scripts
  • Visually check each change in real time

It’s fast, flexible, and safe because it runs entirely in your browser.

Example:

Before:

12345
42
123
99942
42
0042
Text line
10042

Find: 42 Replace with: REPLACED Match type: Substring match

After:

12345
REPLACED
123
999REPLACED
REPLACED
00REPLACED
Text line
100REPLACED

Common Use Cases:

Let’s say you need to scrub an ID, fix a repeated code, or replace a version number buried in strings. Maybe you want to replace placeholder values across multiple entries. Whatever the reason, Find and Replace Integers gives you a fast way to get it done and lets you see the changes live before you commit.

Useful Tools & Suggestions:

Once you’ve used Find and Replace Integers, it’s worth running Highlight Integers to visually double-check what changed. If you’re doing broader cleanup or substitutions, Replace Integer Digits lets you target digit-level edits instead of full values.

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