Convert a CSV File to Excel (.xlsx)

Processed entirely in your browser. Never uploaded to a server.

Drop a CSV file here or click to browse

Processed entirely in your browser. Never uploaded to a server.

This tool converts a CSV file into a real Excel workbook (.xlsx), not just a renamed text file. Drop your CSV above and the .xlsx file downloads automatically once it's ready. Excel, Google Sheets, and Numbers can all open the result directly, with the sheet grid, column widths, and cell types already set up the way Excel expects.

CSV itself has no concept of a spreadsheet, no formulas, no cell formatting, no multiple sheets, just rows of comma-separated text. Converting to .xlsx doesn't invent any of that, but it does let each column's values be typed correctly (numbers as numbers, not text strings with quote marks), which is often the actual reason a CSV import into a reporting tool or an existing spreadsheet template goes wrong in the first place.

FAQ

Does formatting carry over?

No, CSV is plain text with no formatting information, so there is nothing to carry over. You get raw data in a single sheet with default Excel formatting.

Will numbers be stored as real numbers or as text?

The conversion lets Excel infer cell types from the data, so values that look numeric are typically stored as numbers rather than text, but formatting like leading zeros or specific decimal display is not preserved.

Does this create multiple sheets or one?

One sheet, since a CSV file only has one table of data to begin with.

Related tools: Excel to CSV, CSV to JSON, CSV Cleaner.