CSV to Excel
without uploading it.
Paste CSV data and download it as a proper .xlsx spreadsheet — entirely in your browser.
Paste your CSV data.
Click "Download as Excel".
Open the downloaded .xlsx file in Excel, Sheets, or Numbers.
Why there's no upload step
Sometimes you just need CSV data as a real spreadsheet file — for a colleague who expects Excel, or a tool that only accepts .xlsx uploads. This builds the spreadsheet file locally and hands it straight to your downloads folder, no server involved.
Is my data uploaded anywhere?+
No. The spreadsheet is built entirely in your browser — nothing is sent to a server.
Will the columns and rows match my CSV exactly?+
Yes — each CSV row becomes a spreadsheet row, split into columns at the commas, just like opening the CSV directly in Excel would.
What Excel format does it produce?+
A standard .xlsx file, compatible with Excel, Google Sheets, and Apple Numbers.
Can I go the other direction?+
Yes — use the Excel to CSV page.