Compare Two Lists Online — Find Differences & Common Items Instantly
Paste List A and List B below. The tool immediately shows what's only in A, only in B, and what's shared — free, private, no sign-up, no upload.
Compare Two Lists Free →How to Compare Two Lists in 3 Steps
- 1 Paste List A Enter your first list — one item per line, or comma/semicolon separated.
- 2 Paste List B Enter your second list in the same format. Excel paste works too.
- 3 See the comparison Results appear instantly — unique to A, unique to B, and shared items.
What You Get When You Compare Two Lists
Only in List A — Items present in your first list but absent from the second. These are the "extra" or "missing" items depending on your perspective.
Only in List B — Items present in your second list but not in the first.
Common Items — The intersection: everything that appears in both lists.
Full Union — The complete combined list of all unique items from both lists.
Ordered Overlap — Items that appear in both lists in the same relative order (useful for sequence matching).
Compare Any Type of List
Email lists: Compare a subscriber list against an unsubscribe list to keep your sending list clean.
Name lists: Compare attendee lists from two events to find who attended both or only one.
SKU / Product IDs: Compare expected inventory against received shipment to spot missing items.
IP addresses / hostnames: Compare network device lists before and after a change.
URLs: Compare a sitemap against a crawl report to find broken or missing pages.
Numbers / IDs: Compare invoice numbers, order IDs, or employee IDs across two systems.
Frequently Asked Questions
How do I compare two lists online?
Paste List A and List B into the tool above. Results appear instantly — unique to A, unique to B, and common items.
Is there a free tool to compare two lists?
Yes — this tool is completely free. No sign-up, no credit card, no file upload required.
Can I compare two Excel columns online?
Yes. Copy a column from Excel and paste it into List A, then copy your second column into List B. Tab-separated Excel data is handled automatically.
How do I find common items between two lists?
The "Common Items" section in the results shows everything that appears in both List A and List B.
Can I compare two email lists?
Yes. Paste your email lists one address per line. Case-insensitive matching is on by default so JOHN@example.com and john@example.com are treated as the same.