CSV to Excel. A real .xlsx.
Convert CSV into a real .xlsx workbook and stop fighting Excel's import wizard, encoding and delimiter quirks.
Your spreadsheet preview will appear here
How to use CSV to Excel
Paste or upload your CSV
Open a .csv export from a database, analytics tool or another app, or paste the raw text.
Check the parsed table
Columns, quoted fields and embedded commas are parsed properly and previewed as a table, so you catch a bad delimiter before it reaches Excel.
Download the .xlsx workbook
Get a proper Excel file with a frozen, bold header row that opens on double-click — no Text Import Wizard, no delimiter guessing.
Why use Parsefy CSV to Excel?
Your data never leaves your device
Everything runs in your browser tab — there is no upload step and no server to store anything. That makes it safe for API responses, database dumps and production data you could not paste into a hosted converter.
Fixes UTF-8 characters Excel usually garbles
Opening a UTF-8 CSV directly in Excel often turns names like José into José. Because .xlsx stores text as XML, accented characters, non-Latin scripts and emoji all survive the conversion.
No import wizard, no delimiter prompt
The delimiter is resolved during conversion, so the workbook opens directly with your columns already in the right place instead of everything landing in column A.
No sign-up, no file-size tier
There is no account, no email wall and no paid plan gating bigger files. The only real limit is how much memory your own browser can spare.
CSV to Excel — frequently asked questions
Why does Excel garble accented characters in my CSV?
Excel does not always detect UTF-8 when you double-click a .csv, so it falls back to a legacy encoding and José turns into José. Converting to .xlsx sidesteps the problem completely, because the text is stored as XML with an explicit UTF-8 declaration rather than being guessed at open time.
Why do my leading zeros and long IDs change?
Excel treats anything that looks numeric as a number, so 007 becomes 7 and a long order ID may switch to scientific notation. Parsefy writes values that are not clearly numeric as text, which preserves them — but a column of pure digits is still exported as numbers so you can calculate with it.
Does this create a real .xlsx file?
Yes. Parsefy assembles a genuine Office Open XML workbook in your browser, so there is no extension-mismatch warning and the file opens natively in Excel, LibreOffice, Numbers and Google Sheets.
Is my spreadsheet uploaded anywhere?
No. Parsing and workbook generation both happen in your browser, so customer lists, financial exports and other sensitive spreadsheets never leave your machine.