CleanMySheet guide

Remove duplicate rows from a spreadsheet

Exact duplicates are hashed on unlocked columns and extras are dropped, keeping the first row. Fuzzy duplicates (high Levenshtein similarity) open a review list so you accept or keep both. ID columns can be locked so keys are not part of a destructive hash.

Open the cleaner

Steps

Upload CSV or Excel
Lock ID / primary key columns
Apply Remove exact duplicates
Optionally apply Fuzzy duplicate detection and review pairs
Export the reduced file

Exact vs fuzzy

Exact matching is for identical copies (same email, same name, same amount). Fuzzy matching catches typos and near-matches. Auto-deleting fuzzy rows is how CRM tools lose real people—CleanMySheet requires a click.

Duplicate keys

Two rows can share an email but disagree on phone. The Duplicate keys preset drops extras that share email or ID while keeping the first record.

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Remove duplicate rows from a spreadsheet

Steps

Exact vs fuzzy

Duplicate keys

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