Excel & CSV Smart Cleaner

Tidy a messy spreadsheet in your browser and download a clean CSV or XLSX.

  • No uploads
  • CSV · TSV · XLSX
  • Before/after preview

Excel & CSV Smart Cleaner

Drop a CSV, TSV or XLSX file here or choose a file

Up to 5 MB, 20,000 rows and 200 columns. Files never leave your device.

Ambiguous dates such as 03/04/2026 are left unchanged in Auto.
Column tools (optional)

New columns are added after the original.

Only adjacent columns can be merged.

Processed in your browser. Nothing is uploaded.

Choose a CSV, TSV or XLSX file to clean.

How it works

The first row is used as a header by default. The tool trims and normalizes cells, merges or splits columns, then removes empty and duplicate rows. The before/after preview and change log show exactly what changed.

Tips

  • Keep a copy of the original file. The tool never changes it.
  • Turn off date or number normalization for ID, phone or code columns.
  • Commas are treated as thousands separators. If a column uses a decimal comma, turn number normalization off.

Frequently asked questions

Is my file uploaded?

No. The file is read and cleaned in your browser. Nothing is sent to beancuit or anyone else.

Which formats can I use?

CSV, TSV and XLSX. The first row is used as the header by default; you can turn that off.

What counts as a duplicate?

Rows that are exactly the same after trimming and normalization. The first one is kept.

Are dates and numbers always changed?

No. Only formatted dates and numbers are normalized; plain numbers and IDs are left alone. You can turn either option off.

Can I check the result before downloading?

Yes. The before/after preview and the change log show what changed. Your original file is not modified.

Related tags

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Results are for reference only. Calculations may be wrong and are not legal, medical or financial advice. Always confirm with the relevant authority or a professional before important decisions.

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