Convert CSV to Excel instantly.
Open a CSV file, optionally edit or clean the data, then export as an XLSX file — all in your browser with no server uploads.
How it works
Three simple steps
Open your CSV file
Drag and drop or browse to load your CSV into the editor.
Edit if needed
Optionally clean, sort, filter, or modify the data before converting.
Download as XLSX
Export the file as an Excel workbook ready to share.
Key features
Everything you need
One-click conversion
Convert your CSV to Excel format with a single export action.
Edit before converting
Fix data issues, rename columns, or remove rows before creating the Excel file.
Clean XLSX output
The exported Excel file preserves your column structure and formatting.
Fast and private
Conversion happens instantly in your browser with no file uploads.
Your data stays on your device
SheetTool processes everything locally in your browser. Your files are never uploaded to a server. No account required.
FAQ
Frequently asked questions
How do I convert a CSV file to Excel?
Open your CSV file in SheetTool, then click the export button and select XLSX format. The Excel file downloads immediately.
Can I edit the CSV before converting to Excel?
Yes. SheetTool lets you edit cells, sort, filter, clean duplicates, and more before exporting as XLSX.
Is the CSV to Excel conversion free?
Yes. SheetTool is completely free with no sign-up, no limits, and no watermarks.
Does my CSV file get uploaded to a server?
No. Everything is processed locally in your browser. Your data never leaves your device.
Ready to get started?
Open SheetTool and start working with your files right away. No sign-up needed.