CSV to Excel Converter
Convert CSV to Excel (.xlsx) instantly. Free online CSV to Excel converter — upload or paste your CSV and download a formatted Excel spreadsheet. No signup.
CSV to Excel — Why the Format Matters for Business Users
CSV is technically simple — plain text with delimiters. But "simple" creates problems for business users. Excel imports CSV without data types, treating everything as text. Phone numbers lose leading zeros. Dates get reformatted based on locale settings. Large numbers trigger scientific notation. Converting CSV to a proper Excel file (.xlsx) avoids all of these issues and produces a file that opens correctly on the first try.
What .xlsx preserves that CSV cannot
Excel format maintains data types — numbers stay numbers, dates stay dates, booleans display as TRUE/FALSE. Column headers can be styled with formatting. Column widths adjust to fit content automatically. The file can be shared via email and opened on any device without requiring specific software versions or locale configurations. For business users who live in Excel, the format difference matters every time they open the file.
The semicolon delimiter problem
European versions of Excel use semicolons as delimiters by default because commas serve as decimal separators in many European countries. A CSV file using commas opened in a French or German Excel installation appears as a single column of unseparated values. If your CSV was generated by European software or for European users, select the semicolon delimiter before converting to ensure correct column separation.
Using the Excel file in Google Sheets
Google Sheets imports .xlsx files natively. Upload via File → Import, or drag directly into the browser. All data, column widths, and basic formatting are preserved. For collaboration, upload to Google Drive and convert to Sheets format for real-time multi-user editing. The .xlsx intermediary is the most reliable way to move data between Excel-based workflows and Google Sheets.