Merge duplicates before they reach your CRM
Merge duplicates in CSV and Excel files
Dedupely merges the list, so the import doesn't add duplicates from the file itself.
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Trusted by 20,000+ companies around the globe
Merge the list before you import it
Event and webinar lists repeat people. Your CRM matches on email alone. A second address becomes a second contact.
Dedupely merges duplicates in the CSV so each contact arrives once.
Turn every export into one file
A migration starts with exports from the old CRM. Sales adds its own spreadsheets. The same company sits in all of them.
Dedupely combines the files and merges each company into one record.
Test your merge on a copy first
A wrong merge in the CRM is hard to put back. So the cleanup never starts. The duplicates keep growing.
Dedupely merges duplicates in a CSV export so nothing in your CRM changes.
CSV duplicate management, side by side
| NativeExcel & Google Sheets | Our SolutionDedupely | |
|---|---|---|
| Matching method | Exact match on the columns you choose | 5 match types per field: typos, sound-alikes, domains |
| Duplicate rows | Deleted | Combined into one record |
| Control over which value survives | Which row is kept isn't documented | Merge Rules on every field |
| Several files | One range at a time | Combine any number of CSVs |
| Review before acting | Highlight duplicates | Review each match and preview the merge |
| Repeatable | Power Query in Excel only | Saved Duplicate Searches |
Excel and Google Sheets summarized from their help pages, October 2026.
Start merging in 5 minutes
Three steps to your first merge
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Upload your CSV
A list or an export, one file or several.
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Match Duplicates
Use the default searches or build your own.
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Merge Duplicates
Bulk, one by one, or Auto Merge.
We love customer service
That's why we offer unlimited support.
Submit a ticket
You can submit a support ticket by emailing us. Our team will respond as soon as possible.
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Chat with a real person on our team, Monday to Friday.
Mon-Fri, 9-5 CST.
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FAQs
No. CSV records do not count toward your record limit, and uploads are unlimited on every plan and the 7-day trial.
No. Upload a file and merge. Connect HubSpot, Pipedrive or Salesforce when you want the same cleanup there.
Yes. Upload them into one instance and columns with the same header become one field. Or keep each file separate.
No. Merge Rules decide which value wins in each field, and Merge History keeps the originals.
Yes. Duplicate Searches match on any column with Exact, Similar, Fuzzy, Similar Words or Domain Root.
Yes. Upload more files to the same instance, then use Create Export to pick the fields for the clean CSV.
Yes. The free CSV dedupe tool runs in your browser on up to 2,000 rows.
Get started for free
20 free trial merges and as much free support as you need to get your duplicates under control.
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"Worked very simply and effectively and suited my budget [...] Very happy to recommend a good app and integration."
Allan RCo-founder & Managing Director, Target3D11–50 employees
Running CRM cleanup for clients? See the Partner Program
