Clean Excel & CSV

Select columns and remove surrounding spaces, empty rows, and duplicate rows. Review row counts before saving CSV or Excel.

Output CSV / XLSX

Choose filesProcessed on your device

Choose filesClick or drop files hereXLSX, XLS, CSV, TSV, TXT · 20 MB

Input encodingInput delimiter

Columns to keep

Choose a file to see its columns.

Trim surrounding spacesRemove empty rowsRemove duplicate rows

Output settings

Output formatCSV output encoding

Prevent CSV formula execution

Prefix formula characters (=, +, -, @, etc.) with an apostrophe. Check whether your upload system accepts this change. XLSX stores values as text cells.

Example

Apple with a trailing space differs from Apple. Trim spaces before removing duplicates to treat them as the same value.

Supported features and limits

Column selection, trimming, empty-row removal, and duplicate removal affect which rows remain. Review the counts.
XLSX output stores values as text. Original formatting and formulas are not preserved.
Each sheet supports up to 50,000 rows, 200 columns, and 1 million cells.

Frequently asked questions

Will my original files change?

No. The tool creates new result files. Review the downloaded results before using them.

Are my files uploaded?

Selected files are processed in your browser. File contents and filenames are not sent to a server. Aggregate tool-use counts are collected as described in the privacy notice.