Excel Column Cleaner
Upload an Excel or CSV file and apply per-column cleaning operations — trim, substitute, change case, convert types, format dates. All processing is 100% local in your browser.
Upload File
Click or drag & drop
Excel (.xlsx, .xls) or CSV
Excel (.xlsx, .xls) or CSV
Column Operations
Upload a file to see columns
Statistics
Source: 0 rows, 0 cols | Cleaned: 0 cols, 0 ops
Source: 0 rows, 0 cols | Cleaned: 0 cols, 0 ops
Upload a file and apply cleaning to see results
How to Use
1
Upload File
Upload an Excel or CSV file via click or drag-and-drop.
2
Add Operations
Click columns and add cleaning operations like Trim, Substitute, or Change Case.
3
Apply & Download
Apply cleaning, preview results, and download as Excel or CSV.
Use Cases
Trim Spaces
Remove leading/trailing whitespace from imported data.
Remove leading/trailing whitespace from imported data.
Standardize Names
Use Proper Case for name columns.
Use Proper Case for name columns.
Replace Text
Substitute characters like dashes from phone numbers.
Substitute characters like dashes from phone numbers.
Format Dates
Convert to YYYY-MM-DD or other standard formats.
Convert to YYYY-MM-DD or other standard formats.
✓ Done!