Remove Duplicates from Excel Online — Free

How to use it

1. Choose your Excel or CSV file.
2. Type the columns to match on (for example Email, Phone), or leave it blank to match whole rows.
3. Pick exact or fuzzy matching and which copy to keep, then press Run.

Fuzzy matching catches near-duplicates like extra spaces or different capital letters. The removed rows come back in their own file, so you can check them.

What you get

• Deduplicated file
• Removed-rows file with the row it matched
• Summary: kept / removed

Good to know

• Fuzzy mode is reviewed by you — pairs are listed with a similarity score
• Up to 20 MB per file, 10 files at a time.
• Files are deleted from our server within an hour.

Do it yourself in Excel

• Remove duplicates inside Excel
• Find duplicates
• Highlight duplicates

Questions

What does 'keep fullest' mean?

When two rows are duplicates, the one with more cells filled in is kept.

Can I see what was removed?

Yes — the removed rows are in a separate file.