What it is
The CSV to Excel Converter turns a .csv file into a real .xlsx spreadsheet, with the values landing in separate columns instead of being crammed into column A.
Why a CSV opens badly in Excel
A CSV is just text with separators, and nothing inside it says which separator was used. Excel guesses based on your regional settings, and when the guess is wrong the whole file arrives in one column. That single mismatch is behind most of the frustration with CSV files.
Three other things break in the same moment:
- Leading zeros disappear. A postcode written as 01310 is read as the number 1310.
- Dates are rewritten. Excel decides 03/04 is March or April depending on where it thinks you are.
- Accented characters turn into symbols when the file is UTF-8 and Excel assumes something else.
Converting first sidesteps all of it: the file arrives already parsed, in real columns, with the text kept as text.
How to use it
- Add the CSV, by dragging it in or picking it from your device.
- Check the preview of the columns that were detected.
- Download the XLSX and open it normally.
Your file stays on your device
The whole conversion runs in your browser. The spreadsheet is never uploaded, never stored and never seen by anyone else, which matters when the file holds customer records, prices or anything else you would not email to a stranger.
To go the other way, use the Excel to CSV converter. For data headed to an API instead of a spreadsheet, the Excel to JSON converter is the better fit.