XLSX to CSV Converter Free Online — Convert Excel to CSV
Why Convert Excel to CSV?
CSV is the universal data interchange format. Databases (PostgreSQL, MySQL, SQLite), analytics tools (Pandas, R, Tableau), and APIs all accept CSV. Excel .xlsx files carry formatting, multiple sheets, and formulas that complicate programmatic data processing. Converting to CSV strips all of that and gives you clean, portable data.
Sheet Selection and Options
Multi-sheet Excel files: choose which sheet to convert, or export all sheets as separate CSV files in a zip archive. Delimiter options: comma (standard), semicolon (European locales), tab (for TSV). Header row: include or exclude the first row depending on whether your target system expects headers.
Formula Handling
By default, formulas are evaluated and the result value is exported to CSV (e.g., =SUM(A1:A10) becomes 450). Optionally, export formula strings instead of values — useful for documentation purposes. Date cells are formatted using ISO 8601 (YYYY-MM-DD) unless you specify a custom date format.
Frequently Asked Questions
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