Remove Duplicates and Clean Data Template
Strip duplicates, fix casing and trim whitespace in one pass — turn a messy export into a clean file without touching a formula.
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What's inside this template
How it works
It loads with realistic sample data so you see a finished result immediately — nothing to set up.
Type over the sample values, or upload your own file and map the columns in a couple of clicks.
The Data Cleaner recalculates instantly. Export to Excel or send a live link.
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Common questions
How do I remove duplicates across multiple columns?
Choose the columns that together define a duplicate — email alone, or name plus postcode. Deduplicating on the whole row misses the near-identical records that are the actual problem.
What else does cleaning cover besides duplicates?
Trimming whitespace, normalising casing, and standardising date and number formats. Those three are what make 'the same' value fail to match across two files.
Can I see what was removed before committing?
Yes — the removed rows are shown rather than silently dropped, so you can confirm a duplicate really was one before saving the cleaned file.
Start from the De-dupe & clean a file template
Open it with sample data, swap in your own, and export in seconds — no formulas, no blank page.
Use this template free →