Find List Length

Calculate exact list item counts, unique entries, duplicate totals, empty lines, and character length metrics. Works with lines, commas, semicolons, and pipes in real-time.

Private • In-browser processing • Zero server uploads

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How to Use Find List Length

1
Paste List Items
Type or paste your items into the input panel.
2
Select Delimiter
Choose your delimiter format (newlines, commas, or semicolons).
3
View Summary
Item count and uniqueness metrics calculate automatically.

Key Features

Comprehensive Metrics
Counts total entries, unique items, duplicates, and blank lines.
Length Statistics
Computes average item length, plus shortest and longest entry details.
Multiple Delimiters
Inspect lists formatted with newlines, commas, semicolons, or pipes.
100% Client-Side
Real-time statistics computed purely in your browser.

Common Use Cases

  • Auditing lead databases and email lists for total count and uniqueness.
  • Checking keyword list lengths before bulk uploading to advertising platforms.
  • Verifying array size and empty entry counts during programming tasks.
  • Calculating average text entry lengths for form validation limits.

Frequently Asked Questions

The tool checks every non-empty item against previously seen values (either case-sensitively or case-insensitively depending on your setting).

Yes! Switch Item Delimiter to 'Comma (", ")' and the tool will parse commas rather than newlines.

No, all statistics are computed locally in your web browser memory.

Sort a List
Sort a list of items alphabetically, numerically or by length — asc or desc.
Find Unique List Items
Remove duplicate lines and keep only the unique items in a list.
Find Repeating List Items
Find which items appear more than once in a list and show their count.
Calculate Number Sum
Paste a list of numbers and instantly get their sum, average, min and max.
Reverse a List
Flip the order of a list of items. One item per line.