Convert legacy XLS to clean CSV for imports, analytics, and databases. Single-sheet files download as CSV, multi-sheet files as a ZIP.
Accepted format: .xls
Size up to 100MB
Files deleted automatically
Secure upload (SSL)
Convert your legacy Excel file in 3 simple steps. Fast, secure, and free.
Drag and drop your .xls file or click to browse. Maximum size is 100MB.
We decode the legacy XLS workbook and export its sheets to CSV for data pipelines and imports.
Your converted file will download automatically in your browser.
XLS is an older Excel format. We use LibreOffice (open-source) to open it reliably and extract your tables - without you installing anything.
CSV is plain text, so it stores values in rows and columns (not colors, charts, or images). Single-sheet files download as one CSV. Multi-sheet workbooks download as a ZIP (one CSV per sheet).
No registration required. Convert files up to 100MB, and temporary files are cleaned up automatically after the download.
A simple overview of the features and benefits of the formats
XLS is a binary spreadsheet format developed by Microsoft for Excel. It was the default file type before being replaced by XLSX in 2007. XLS files can store cell data, formulas, charts, and macros, making them a popular choice for budgeting, reporting, and data analysis. Although considered a legacy format, XLS files remain supported by modern versions of Excel, as well as by Google Sheets, Apple Numbers, and LibreOffice Calc.
CSV (Comma-Separated Values) is a simple text-based file format designed for storing and transferring tabular data. Each row in a CSV file corresponds to a table row, with column values separated by commas, semicolons, or other delimiters. CSV is universally recognized by virtually all spreadsheet applications, making it an efficient format for data exchange between programs. However, unlike XLS, CSV files cannot store charts, formulas, macros, or any visual formatting.
Answers about XLS to CSV export, encoding, multi-sheet workbooks, and privacy.
Yes. You can convert XLS to CSV for free, with no subscriptions.
In the output file, the separator character will be a comma.
No. CSV is plain text and cannot store formatting, charts, images, or shapes. It keeps rows and columns of data only.
CSV cannot store formulas. We export the calculated values that appear in cells.
You'll receive a ZIP archive containing one CSV per sheet. Single-sheet workbooks are downloaded as a single CSV.
We export UTF-8 CSV with a BOM to improve compatibility with spreadsheet apps and CSV import tools.
You can upload and convert XLS files up to 100MB.
Yes. Uploads are protected with SSL encryption, and converted files are deleted automatically after download.
Our Desktop Converter processes multiple legacy files offline without size limits