Compare Two Lists Online
Paste two lists — one item per line — and instantly get the common items, the items unique to each list, and the deduplicated union. Results update live as you type.
How to compare two lists
- 1
Paste your lists
Put one item per line: emails, SKUs, keywords, names, URLs — anything. You can also drop .txt or .csv files onto the panels.
- 2
Adjust the options
Trim whitespace, ignore case, skip empty lines or sort the output alphabetically. Duplicates inside each list are ignored automatically.
- 3
Grab the result you need
Switch between “In both”, “Only in A”, “Only in B” and “Union”, then copy the list or download it as a .txt file.
Read the full guide: How to Compare Two Columns in Excel: Formulas, Formatting and Online Tools
Intersect, subtract and merge lists without spreadsheets
Comparing two lists is one of those tasks that always ends up in a spreadsheet with VLOOKUP formulas — this tool does it instantly. Paste two lists and it computes the set operations for you: the intersection (items present in both), the differences (items only in A, items only in B) and the deduplicated union of everything.
Options make the matching practical: trim leading and trailing whitespace, treat items case-insensitively, skip empty lines and sort the results alphabetically. Duplicates within each list are counted and ignored, so the tool doubles as a quick list deduplicator — paste a single list and read the union tab.
Typical uses: finding which email subscribers appear on a suppression list, which SKUs exist in one export but not the other, which keywords two reports share, or merging two attendee lists without duplicates. Everything runs in your browser — no list data is ever uploaded.
FAQ
List comparison — frequently asked questions
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