CSV → XLSX
Wraps CSV into an XLSX workbook with numeric and boolean type inference, handing logs and data exports to Excel users.
Drag files here or click to upload (multiple files supported)
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How to convert CSV to XLSX
- 1Upload your CSV file by dragging, clicking, or pasting.
- 2Adjust quality settings if needed.
- 3Click 'Convert Now' and wait for the conversion to complete.
- 4Download your converted XLSX file.
About CSV to XLSX conversion
CSV is a plain text comma-separated table format following the RFC 4180 standard. It only supports a single sheet, and all content is stored as strings. XLSX is the default format for Excel 2007+ conforming to the ISO 29500 standard, and supports multiple worksheets, formulas and styles. This conversion structurally stores single-table CSV into XLSX format.
The conversion generates an XLSX file with a single worksheet. Its size is smaller than uncompressed formats with the same content. It automatically infers cell data types, retains the original CSV header row information, stores each line of content into corresponding XLSX cells, and does not generate additional style or formula nodes.
It is suitable for editing CSV files exported from databases by importing them into Excel 2007 and later versions. It is compatible with various spreadsheet software on Windows and macOS systems, and can be used to create formatted reports or perform further data calculations.
CSV vs XLSX: technical comparison
| Feature | CSV | XLSX |
|---|---|---|
| Released | 1972 | 2007 |
| Developer | RFC 4180 | Microsoft / ECMA-376 |
FAQ about CSV → XLSX
Will data change after conversion?
Original table content will not change. This tool parses CSV and generates specification-compliant XLSX based on SheetJS. It only adjusts the storage structure and retains all original text data.
Can the original CSV header be retained?
The original CSV header row is fully retained and stored as the first row of the XLSX after conversion. The tool preserves the original order and content of all lines in the CSV, and does not add or delete any row data.
What is the maximum file size limit?
The single file size limit for this conversion is 50MB. Only one file can be converted at a time, and eligible files can be submitted for processing normally.
Will my files be stored?
Files are uploaded to the server via HTTPS for conversion. Immediately after conversion is completed, the server deletes both the source file and the output file, and does not store any files.