Free Tool

CSV Cleaner

Clean up messy spreadsheet exports before you import them anywhere else. Pick exactly which operations to run. Nothing happens to your data that you didn't ask for.

Drag a file here, or click to browse

CSV, up to 10 MB

Operations

Trim whitespaceRemoves leading/trailing spaces from every cell.Remove blank rowsDrops rows that are entirely empty.Remove duplicate rowsKeeps only the first occurrence.Standardise column headersLowercase, spaces become underscores.Title Case text columnsApplies Title Case to text values.Flag invalid emailsAdds a _valid column next to any email column. Doesn't delete rows.Flag malformed phone numbersAdds a _valid column next to any phone column.Normalise dates to YYYY-MM-DDBest-effort parse of columns with 'date' in the name.