Remove Duplicates and Clean Data Template
Strip duplicates, fix casing and trim whitespace in one pass.
Remove Duplicates and Clean Data Template is a free Excel workbook: 3 sheets, 45 live formulas and realistic sample data throughout, 10 KB as .xlsx.
The formulas are printed on this page, unedited, so you can check the method before downloading anything. Swap in your own numbers and the whole file recalculates — which is the part no chat window can hand you. Opens in Excel, Google Sheets, Numbers and LibreOffice; no add-in and no macro.
A look inside
This is a real slice of the Data sheet from the actual file — not a screenshot, and not a mock-up. Cells shown in violet are live formulas, exactly as they arrive.
| # | Company | Contact | Signed up | Value | Key count | Duplicate key? | |
|---|---|---|---|---|---|---|---|
| 2 | hello@northgate.co.uk | Northgate Ltd | A. Okafor | 2026-07-26 00:00:00 | £3,079 | =COUNTIF($A$2:$A$11,$A2) | =IF($F2>1,"DUPLICATE KEY","") |
| 3 | hello@northgate.co.uk | Northgate Limited | A. Okafor | 2026-06-10 00:00:00 | £1,985 | =COUNTIF($A$2:$A$11,$A3) | =IF($F3>1,"DUPLICATE KEY","") |
| 4 | info@halden.com | Halden & Co | M. Lindqvist | 2026-05-04 00:00:00 | £8,299 | =COUNTIF($A$2:$A$11,$A4) | =IF($F4>1,"DUPLICATE KEY","") |
| 5 | team@brightwater.io | Brightwater | R. Bhatt | 2026-04-13 00:00:00 | £7,429 | =COUNTIF($A$2:$A$11,$A5) | =IF($F5>1,"DUPLICATE KEY","") |
| 6 | team@brightwater.io | Brightwater | R. Bhatt | 2026-07-09 00:00:00 | £7,807 | =COUNTIF($A$2:$A$11,$A6) | =IF($F6>1,"DUPLICATE KEY","") |
| 7 | hi@verity.group | Verity Group | S. Moreau | 2026-06-21 00:00:00 | £7,694 | =COUNTIF($A$2:$A$11,$A7) | =IF($F7>1,"DUPLICATE KEY","") |
| 8 | press@ashcombe.media | Ashcombe Media | J. Wren | 2026-07-05 00:00:00 | £8,987 | =COUNTIF($A$2:$A$11,$A8) | =IF($F8>1,"DUPLICATE KEY","") |
| 9 | ops@pike.co | Pike Logistics | T. Nowak | 2026-01-05 00:00:00 | £7,407 | =COUNTIF($A$2:$A$11,$A9) | =IF($F9>1,"DUPLICATE KEY","") |
What’s in the file
What it explains
- The three kinds
- Before you delete
Download it
The workbook is free with a DataHub Pro account. Free accounts download three templates and keep them forever — re-downloading one you already have never counts again. Pro accounts get all 141.
Related templates
Writing about Remove Duplicates and Clean Data? Link to this page.
The preview above is a real slice of the file, so this page is worth citing on its own — readers can see the formulas without downloading anything or making an account. Copy the line below.
<a href="https://www.datahubpro.co.uk/excel-templates/remove-duplicates">Remove Duplicates and Clean Data Template</a> — free Excel template from DataHub Pro
What you may do: link to this page, quote from it, and screenshot the preview, with attribution to DataHub Pro. Use the workbook itself in your own business, commercially, with no restriction and no attribution required. What you may not do: host the .xlsx elsewhere or resell it — send people here instead, where it stays current.
Or skip the spreadsheet entirely
Upload your own file and DataHub Pro runs the same analysis on your numbers — free and unlimited, no add-in, no macro.
Analyse your own file free →