CSV to Excel Converter
Upload a CSV file and download a real Excel (.xlsx) workbook — free, private, in your browser.
Upload a CSV file and download a proper Excel .xlsx workbook with the columns correctly separated, ready to open in Excel, Google Sheets or Numbers. Opening a raw CSV by double-clicking often dumps everything into one column or mangles leading zeros; converting to .xlsx first bakes the columns in and avoids the delimiter and encoding guessing entirely. Everything is generated in your browser, so the file is never uploaded.
To convert the other way, use Excel to CSV.
Frequently asked questions
How do I convert CSV to Excel?
Upload your .csv file and click convert to download a real .xlsx workbook with each field in its own cell.
Why does my CSV open in one column in Excel?
Excel guesses the delimiter from your regional settings. Converting to .xlsx first locks the columns in so it always opens correctly.
Does it preserve leading zeros?
A proper .xlsx preserves your data far better than a raw CSV re-parse, which is why converting first is safer for ID columns.
Is my file private?
Yes, the workbook is generated in your browser and nothing is uploaded.