XLSX → CSV
Extracts the first XLSX worksheet to UTF-8 CSV with cached formula values, importing spreadsheets into databases and scripts.
Drag files here or click to upload (multiple files supported)
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How to convert XLSX to CSV
- 1Upload your XLSX file by dragging, clicking, or pasting.
- 2Adjust quality settings if needed.
- 3Click 'Convert Now' and wait for the conversion to complete.
- 4Download your converted CSV file.
About XLSX to CSV conversion
XLSX is an Office Open XML spreadsheet conforming to the ISO 29500 standard. It uses ZIP to encapsulate XML structures, and supports multiple worksheets, formulas and styles. CSV is a plain text comma-separated format following the RFC 4180 standard, with no multi-sheet structure or data type distinction. It is a general format for cross-platform data interchange, so this conversion requirement exists.
The converted file size is smaller than the original XLSX file. By default, only the first worksheet in the XLSX is converted. Calculated cached values of formulas in the original file are retained, cell content is automatically inferred for text format, original header row content is preserved, and original cell style information is not retained in the output CSV.
The conversion result is suitable for workflows such as relational database import and export, Python Pandas data processing, and text data analysis on Linux systems. It is compatible with all mainstream versions of spreadsheet software and text editors, and does not require special runtime environment support.
XLSX vs CSV: technical comparison
| Feature | XLSX | CSV |
|---|---|---|
| Released | 2007 | 1972 |
| Developer | Microsoft / ECMA-376 | RFC 4180 |
FAQ about XLSX → CSV
Will data be distorted after conversion?
Basic table content will not be distorted. Only non-text data such as styles and formulas themselves from the original XLSX are lost, and core cell content can be fully retained to meet subsequent data import and processing requirements.
Can multiple worksheets be retained?
The current version only exports content from the first worksheet, and does not support converting multiple worksheets at the same time. If you need to convert other worksheets, you need to split the worksheets first before uploading for conversion.
What is the maximum file size limit?
The upload limit for a single file is 50MB. Files exceeding this size cannot be submitted for conversion. Only one XLSX file can be converted at a time, and no fee is charged.
Will my files be saved?
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, which protects data privacy.