Drag & drop your file here
or
Max file size: 50MB (CSV or Excel)
Why Use Our Data Cleaning Tool?
- Clean CSV/Excel files in your browser (no server uploads)
- Remove duplicates with one click
- Fix date formats and column types
- Delete special characters (keep emails safe)
- Trim whitespace automatically
- Replace empty values with custom text
How It Works
Upload
Drag & drop your CSV or Excel file (up to 50MB).
Clean
Select options like duplicate removal or date formatting.
Download
Get your cleaned data file instantly.
Frequently Asked Questions
Is my data secure?
Absolutely! All processing happens in your browser - your files never leave your device.
What file types are supported?
We support CSV, XLSX (Excel), and XLS files up to 50MB in size.
How do I clean my data?
Just upload your file, select cleaning options, and download the processed version - no technical skills needed!
Can I undo changes?
Yes! The original file remains untouched - you can always re-upload it if needed.
How do I clean a CSV file online for free?
Use our free CSV cleaning tool to remove duplicates, fix formats, and sanitize data without installing software.
Can I clean Excel files without Power Query?
Yes! Our tool simplifies Excel data cleaning with one-click fixes - no technical skills needed.