Clean Excel Data
Remove empty rows, trim stray spaces, tidy up headers, and standardize date formats — with a report of exactly what changed.
Privacy & processing: Runs entirely in your browser — your file is never uploaded to a server.
How to use this tool
- Upload your Excel or CSV file
- Choose which cleaning steps to apply
- Review the changes report
- Download the cleaned file
Common use cases
- Preparing a messy export before analysis
- Standardizing dates from systems with inconsistent formats
- Tidying a file before sharing it with a team
Limitations
Fixes formatting problems, not naming decisions — it won't recognize that two different column names mean the same field.
FAQ
What exactly does the header-cleaning option fix?
It trims leading/trailing whitespace and collapses repeated internal spaces in header text — a formatting fix, not a renaming one.
Does this fix ambiguous date formats?
It resolves unambiguous cases reliably and applies a month-first default for genuinely ambiguous values.
Can I choose which cleaning options to apply?
Yes — each cleaning operation (blank rows, spacing, dates) can be toggled independently.