Filter Integers

The Filter Integers tool lets you scan through a list of numbers and return only the ones that meet your exact criteria. You can filter based on value range (min/max), number of digits, whether the numbers are even or odd, and whether to include non-integer lines at all.

It works live, updates instantly, and gives you clean, copyable output all right in your browser.

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




Exclude non-integers
Maximize output

How to Use:

  • Paste your list of integers into the Input Integers box (one per line)
  • Or use Choose File to import a .txt, .csv, or other plain-text file
  • Set the Min and Max fields to only allow values within a certain range
  • Set Digits to filter based on the number of digits (e.g., only 2-digit numbers)
  • Choose a Parity option:
    • All: no parity filter
    • Even: only even numbers
    • Odd: only odd numbers
  • Toggle Exclude non-integers to skip over any invalid or non-numeric lines
  • Toggle Maximize output to expand the output view
  • Your filtered list appears instantly in the output box as you make changes
  • Use Copy Output or Export to File to save results
  • Use Clear All to reset all fields and filters

What Filter Integers can do:

This tool is built to extract exactly the integers you want from a messy or mixed dataset. Whether you’re working with structured or unstructured text, it finds all valid integers, applies your rules, and returns the ones that match.

Example:

Input:

42
apple
105
-20
9999

Filters:Min: 0 Max: 500 Parity: Even Exclude non-integers: On

Output:

42

Common Use Cases:

Use this to clean numeric data, extract numbers from logs, generate test cases, filter results by digit length, or target only positive or even values. Great for developers, teachers, data analysts, and students alike.

Useful Tools & Suggestions:

After running Filter Integers, you might want to Sort Integers to organize the results cleanly. And if you’re working with parity filters, Print Even Integers or Print Odd Integers can help you isolate just the type you’re after without extra config.

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