Excel puts everything in column A when the CSV's separator (comma or semicolon) doesn't match your computer's regional settings. Upload the CSV here: the separator and encoding are detected and you get a proper .xlsx with every value in its own column.
Comma, semicolon, tab or pipe separated, the separator is detected automatically.
The preview shows your data split into the right columns, including special characters like é and ü.
Open the .xlsx in Excel: columns are correct, leading zeros kept, no import wizard needed.
Excel uses your system's list separator. In many European locales that's a semicolon, so a comma-separated file lands in one column (and the other way around).
Select column A, go to Data → Text to Columns, choose Delimited and pick the right separator. Or use Data → From Text/CSV. Converting to .xlsx avoids the problem for everyone who opens the file.
The file is UTF-8 but Excel read it with another encoding. The .xlsx from this page stores characters correctly.
No. Values are written as text, so postal codes, IDs and phone numbers keep their zeros.
Yes. Free, no account, and the file is converted in your browser.
Turn garbled é and ’ back into é and ’.
Turn a CSV into an Excel workbook, leading zeros kept.
Fix spaces, emails, phone numbers, dates and capitalization.
Diagnose a damaged .xlsx, recover readable data, download a verified file.
Convert XLSX, XLS or ODS to a UTF-8 CSV file.