XLSX to CSV
Converter
Convert Excel spreadsheets to CSV online — free, no signup. Perfect for importing data into databases, Python, R, or any other tool.
Convert XLSX to CSV free →No account needed · Up to 25 MB free · Files permanently deleted after 1 hour
How it works
Common questions
Why convert XLSX to CSV?
CSV is the standard interchange format for tabular data. Unlike XLSX, CSV files are plain text — they can be opened and processed by any programming language, database import tool, data pipeline, or analytics platform without needing Excel or a compatible spreadsheet app. Converting to CSV is the first step for most data import and processing workflows.
What happens to formulas in my spreadsheet?
Formulas are evaluated and replaced with their calculated values in the CSV output. CSV is a plain-text format and cannot store Excel formulas. If a formula references another sheet or an external source that cannot be evaluated, the cell value in the CSV may be blank or show an error.
How are multi-sheet workbooks handled?
Each sheet in your workbook is converted to a separate CSV file named after the sheet tab. All files are bundled into a single ZIP archive for download. If your workbook has only one sheet, you receive a single CSV file directly.
Is there a file size limit?
Free users can convert XLSX files up to 25 MB without an account, or up to 10 conversions per day with a free account. Pro users get 500 MB per file and 3,000 credits a month. Business users get up to 5 GB — suitable for very large datasets. Note: XLSX inputs are capped at 50 MB regardless of plan while we migrate parser libraries (this cap will be lifted in a future release).