Convert XLSX or CSV files to XLS, CSV, JSON, TXT, HTML, PDF

Need to convert XLSX or CSV files without installing software? Our free online spreadsheet converter helps you instantly convert your files into various formats like XLS, JSON, TXT, HTML, PDF, XML, and SQL. This fast and secure tool works directly from your browser — no sign-up required, no upload limits, and 100% offline processing.

Available Conversions for Your Spreadsheet Files

  • XLSX to XLS – Easily preserve your Microsoft Excel formatting in the legacy .xls format for compatibility with older software.
  • XLSX to CSV – Extract raw tabular data from Excel spreadsheets for easy data processing, analysis, or migration.
  • XLSX to JSON – Convert your Excel rows into structured JSON format for use in APIs, NoSQL databases, or web applications.
  • XLSX to TXT – Get simple, plain text output from your XLSX files, perfect for text-based applications or analysis.
  • XLSX to HTML – Turn Excel tables into web-friendly HTML tables or embeddable content for websites or blogs.
  • XLSX to PDF – Create clean, printable, and shareable PDF documents from your Excel spreadsheets.
  • XLSX to XML – Convert Excel data to XML format, suitable for data exchange, API integrations, or automated data processing.
  • XLSX to SQL – Generate SQL insert scripts directly from your Excel tables for easy database imports.
  • CSV to XLS – Convert plain CSV data back to rich Excel format while maintaining the original data structure.
  • CSV to XLSX – Transform older CSV files into the modern Excel (.xlsx) format for better compatibility and features.
  • CSV to JSON – Convert CSV rows into structured JSON objects or arrays for web development or APIs.
  • CSV to TXT – Export CSV data into plain text format with proper delimiters for easier reading or processing.
  • CSV to HTML – Automatically generate HTML tables from CSV content with just a click, great for quick web use.
  • CSV to PDF – Convert your CSV data into clean, printable PDF files for sharing or documentation.
  • CSV to XML – Easily turn your CSV data into XML markup, perfect for data migration or processing in different systems.
  • CSV to SQL – Generate SQL statements from CSV files for easy importation into relational databases.

Start converting your files now! Simply upload your XLSX or CSV file, choose your desired output format, and download your converted file. It’s quick, 100% free, and fully browser-based — no data leaves your device, ensuring complete privacy and security.

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