Compare two lists.
Find missing items.
Find common items and differences between two lists, without a spreadsheet formula.
01 / INPUTYour two lists.
02 / OUTPUTWhat matches?
The details, in plain language.
Each line is one item. Empty lines are ignored, duplicates are counted once, and results keep the first occurrence’s spelling and order. Shared items use the spelling from List A.
Matching uses the full line. Enable Ignore letter case when “Alex” and “alex” should match. This tool does not guess whether similar names belong to the same person.
What does List Match do?
List Match is a free two-list comparison tool. Paste one item per line into List A and List B to find items in both, only in A and only in B. It uses exact full-line matching and processes your lists in the browser.
How to compare two lists and find missing items
Paste the two lists.
Put one item per line in each input. To compare spreadsheet columns, copy a single column from each sheet and paste them separately.
Choose the matching rules.
Trim surrounding spaces is on by default. Enable Ignore letter case when “Alex” and “alex” should match. Empty lines are ignored and duplicate entries are counted once.
Read the three result groups.
Both contains shared items. Only A contains items missing from B. Only B contains items missing from A. Copy one group or download all groups as TXT.
When this tool helps
Find missing IDs between two exports
Compare customer IDs, product codes or reference numbers copied from two systems. Matching uses the entire line, so leading zeros matter: “0012” and “12” remain different.
Compare two Excel or Google Sheets columns
Paste each column into a separate list to find overlap or missing values without writing VLOOKUP or COUNTIF formulas. This compares pasted values; it does not open workbooks or compare fields across multiple columns.
A small example
List A / List B
A: Alex, Morgan, Sam B: Morgan, Sam, Jamie
Results
Both: Morgan, Sam Only A: Alex Only B: Jamie
List Match questions, answered
How do I find items in one list but not the other?
Paste the first list into A and the second into B. Only A shows values present in A but missing from B. Only B shows the reverse. Both shows shared items.
Can I compare two spreadsheet columns without a formula?
Yes. Copy one column from each spreadsheet and paste it into the two boxes, one value per line. Copy the result group you need back into your spreadsheet. Workbook and CSV-file parsing are not included.
How are duplicates, blank lines and item order handled?
Blank lines are ignored and each unique matching key is counted once. Results preserve the first occurrence and its order. Shared items use the spelling from List A. This is a membership comparison, not a row-by-row text diff.
Is the comparison case-sensitive?
Yes, by default. Turn on Ignore letter case to match values such as “Alex” and “alex”. Surrounding spaces are trimmed by default; internal spaces and punctuation still affect full-line matching.
Does it match similar names or preserve leading zeros?
It does not guess matches or use fuzzy matching. “0012” and “12” are different text values. Names with different punctuation or spelling remain separate unless the available case or surrounding-space options make them equal.
Are my names, email addresses or IDs stored?
No. The lists stay in this browser tab. UnjamKit does not upload them or save a contact database or browser-storage copy. Your browser may keep form state or downloaded results according to its settings.