Truncate Integers

Truncate Integers lets you shorten numbers by keeping only a fixed number of digits from the start or the end. Each integer gets processed one line at a time, and you control how many digits to keep and whether to preserve the negative sign. It’s handy when you need to trim IDs, reduce number length for formatting, or just keep consistent digit sizes across your data.

The tool updates instantly. Just paste your integers, set your options, and watch the output change in real time. You can copy the result, export it to a file, or clear everything and start again all without refreshing the page or uploading anything.

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


Preserve sign
Maximize output

How to Use:

  • Paste or type one integer per line in the Input Integers box.
  • Or click Choose File to load a file from your device.
  • Set how many digits to keep using the Digits to keep field.
  • Choose the direction:
    • Start: Keeps the first N digits of each number.
    • End: Keeps the last N digits.
  • Toggle Preserve sign to keep negative signs when truncating.
  • Use Maximize output to expand the result box.
  • The Truncated Output updates instantly as you change anything.
  • Click Copy Output or Export to File to save your results.
  • Hit 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 Truncate Integers can do:

This tool helps clean up or format large numbers by chopping them down to a fixed size. You can:

  • Trim digits from IDs or reference numbers
  • Keep just the tail end of serial codes or timestamps
  • Shorten values for display without rounding
  • Control how negative numbers behave when truncating
  • Use it for logs, configs, data columns, or anything else with integer lines

It works fully in your browser with no uploads, and supports file imports for larger jobs.

Example:

Before:

12345
-9876
42
-1
100000
999

Options:

  • Digits to keep: 3
  • Direction: Start
  • Preserve sign: On

After:

123
-987
42
-1
100
999

Common Use Cases:

Need to trim reference numbers to fit a display? Want to keep just the last few digits of a code? Or maybe you’re formatting a bunch of values before exporting? Truncate Integers gives you a fast way to shorten them all, while keeping control over how signs and digits behave.

Useful Tools & Suggestions:

After using Truncate Integers, try Right-pad Integers to keep all your outputs aligned if you’re displaying them in columns. Or pair it with Shift Integer Digits if you want to play around with the digit positions before trimming anything off.

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