How do I find which items are in one list but not the other?

Paste one list into List A and another into List B, one item per line. Only in A shows items missing from B, Only in B shows items missing from A, and each tab has a count. Press Copy to take a result.

How do I find the common items between two lists and paste them into Excel?

Paste both lists and open In both, which is the overlap of the two. All (unique) gives the combined list with duplicates removed. Under Output, choose One per line to paste the result as an Excel column.

Why do Bob@x.com and bob@x.com show up as different items?

Matching is exact unless you turn on options. Tick Ignore case so differently capitalized items match, and keep Trim whitespace on so stray spaces do not cause false mismatches. Ignore accents treats e with an accent as e.

My items are separated by commas, not new lines. Can I still compare them?

Yes. Under Split items on, choose Comma, Semicolon, Tab, a Custom separator or New line. Compare using also lets you match on a single Column instead of the Whole row.

How can I see duplicates inside my own list?

The tool shows a duplicate count plus Duplicates (A) and Duplicates (B) for each input. Items repeated within one list are reported there, and All (unique) merges both lists with duplicates removed.

Yes. Every tool is free to use, with no account and no credit card. The work runs on your device rather than on our servers, which is what keeps it free to run.

Does it work on mobile?

Yes. It runs in current mobile browsers on iOS and Android, with nothing to install.

🔀

Free Compare Two Lists

Compare two lists to find items only in A, only in B, in both, or all combined and de-duplicated. Case and whitespace options. Runs in your browser.

Runs in your browserNo sign-up, no pop-upsNo login requiredFree forever

Works offline once loaded

List A (0 lines)

List B (0 lines)

Trim whitespaceIgnore caseIgnore accents (é = e)Collapse inner spaces

Split items on:

Sort A→Z (natural: item2 before item10)

Output:

— no items —

💡 Paste a list in each box (one item per line). Only in A = items missing from B · In both = the overlap · Only in B = items missing from A · All (unique) = combined, de-duplicated. Everything runs in your browser.

Common uses

Compare Two Email ListsFind which addresses are new, removed, or shared between two lists.
Find Differences Between Two Data SetsCompare two lists of IDs, SKUs, or records.
Merge and De-duplicate Two ListsCombine two lists into one unique list.
Find the Overlap Between Two ListsSee which items appear in both lists (the intersection).
Find What's Missing Between ListsSpot items in one checklist that are absent from another.

How It Works

Comparing two lists by hand is error-prone. Paste them here and instantly see which items are unique to each, shared, or combined — a set comparison in your browser.

1
You paste two lists
One item per line in each box. Nothing is uploaded.
2
They're compared as sets
Items are optionally trimmed and case-normalised, then matched between the lists.
3
You see four views
Only in A (missing from B), In both (the overlap/intersection), Only in B, and All unique (the union, de-duplicated) — each with a count.
4
Copy any result
Grab the list you need with one click.

Lists of emails, IDs, or SKUs can be sensitive. The comparison runs entirely on your device — nothing is uploaded.

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