Local browser tool
XLSX to CSV
Export every worksheet as UTF-8 CSV while keeping the workbook on your device.
● Selected files stay on this deviceChoose XLSX workbook
Drop a file here or browse your device
Steps
How to use XLSX to CSV
- Choose a workbook.
- Worksheets are read locally using displayed text.
- Download one CSV or a multi-sheet ZIP.
Worked example
Export a three-sheet budget
Choose a workbook with Summary, Costs and Forecast.
Result: The ZIP contains three named UTF-8 CSV files.
Supported
What this tool handles
- Multiple worksheets
- Unicode
- Quoted commas and line breaks
Not supported
Important limitations
- Preserving formulas or styles
- Macros or XLS
- Refreshing external data
Operational limits
- XLSX only
- Every worksheet becomes one CSV
- Formatting and formula definitions do not survive
Troubleshooting
Common problems
Leading zeros disappear later
Import that CSV column explicitly as text in your spreadsheet software.
Dates look different
CSV has no date formatting; inspect exported text.
Questions
XLSX to CSV FAQ
Are formulas evaluated?
No calculation engine runs; exported text comes from the workbook reader.
Why a ZIP?
CSV supports one table per file.
Learn before converting