CSV to Excel Converter
Convert CSV files into Microsoft Excel spreadsheets (.xlsx format).
Drop your CSV file here
or click to browse from your computer
CSV, TSV, XLSX, TXT• Private in-browser processing
Private by Design — Your CSV Stays on Your Device
OnlineCSV processes your files entirely client-side using browser JavaScript. Your CSV contents are never uploaded to any server, database, or remote service.
No account requiredWorks offlineZero data transmission
How to Use CSV to Excel
1
Select CSV File
Drop or select your CSV file.
2
Set Sheet Name
Optionally name your output Excel worksheet.
3
Download XLSX
Download your formatted Excel spreadsheet instantly.
Example Transformation
Example CSV Input
sku,name,stock ABC-01,Widget,150
Frequently Asked Questions
Will dates and formulas be safely converted?
All data is strictly converted as cell text and values so Excel does not unexpectedly reformat special IDs.