CSV to Excel
Convert CSV files into Excel workbooks. Merge multiple CSVs into one workbook with a sheet per file.
Free & unlimited
Delimiter
Header row
All processing happens in your browser. No data is sent to any server.
About this tool
- 1
Upload your CSV file
Drag and drop or select a .csv file from your device.
- 2
Configure import settings
Set the delimiter, text encoding, and specify whether the first row contains column headers.
- 3
Preview the spreadsheet
Review the data in a spreadsheet preview to verify columns are aligned correctly.
- 4
Download as XLSX
Click download to save the converted Excel file to your device.
- If columns appear merged, check that the correct delimiter is selected (comma, semicolon, or tab).
- For CSV files with special characters, try switching the encoding to UTF-8 with BOM.
- Numeric strings like ZIP codes (e.g., 01234) may lose leading zeros in Excel - the tool preserves them as text.
- Large CSV files with 100K+ rows convert efficiently since processing happens locally.
- Automatic delimiter detection for comma, semicolon, and tab
- Preserves leading zeros in numeric fields
- Supports UTF-8, Latin-1, and other text encodings
- Generates native .xlsx format compatible with Excel, Google Sheets, and LibreOffice
- Handles multi-line fields and quoted values correctly
- Convert CSV exports from databases into Excel for stakeholder reports
- Prepare CSV data files for colleagues who prefer working in Excel
- Convert CSV bank statements to XLSX for better formatting and filtering
- Transform raw CSV data into Excel for pivot table analysis
Yes. Numbers, dates, and text are detected and typed appropriately in the Excel output. You can also force all columns to text.
Currently, one file at a time is supported. Each CSV becomes one worksheet in the resulting XLSX file.
CSV files do not contain formulas - only plain text values. The values are transferred as-is into the Excel file.