Local browser tool
CSV to XLSX
Create a clean Excel workbook with conservative delimiter detection.
● Your file stays on this deviceChoose CSV file
Drop a file here or browse your device
Simple process
How it works
- Choose a CSV file.
- Confirm or change the delimiter.
- Download the XLSX workbook.
Before you start
Limits and behaviour
- UTF-8 text recommended
- Maximum 25 MB
- Formula-like values are stored as text
Useful detail
Questions answered
We explain meaningful limitations before conversion so you can decide whether this tool is appropriate for your document.
How are commas inside values handled?
Quoted fields are parsed using CSV quote and escaped-quote rules.
Are formulas executed?
No. Formula-like input is deliberately stored as text to reduce spreadsheet injection risk.