Free Online Converter
Convert XLSX to JSON
Free online Microsoft Excel Spreadsheet to JavaScript Object Notation converter. Fast, secure processing directly in your browser.
How to Convert XLSX to JSON
- Click or drag your XLSX file into the upload area above
- Wait for the file to be loaded (happens instantly in your browser)
- Click the "Convert File" button
- Your processed JSON file will automatically download
Why Convert XLSX to JSON?
Convert between spreadsheet formats easily. Export Excel files to CSV for database imports, convert to JSON for web applications, or create Excel files from your data. All processing happens in your browser.
Key Features
100% FreeNo subscription, no hidden fees, no limits
Privacy FirstFiles never leave your device
Fast ProcessingInstant browser-based conversion
No InstallationWorks directly in your browser
High QualityMaintains quality during conversion
SecureClient-side processing only
About XLSX and JSON Formats
XLSX (Microsoft Excel Spreadsheet)
XLSX is the modern Microsoft Excel format supporting multiple sheets, formulas, charts, and advanced features.
JSON (JavaScript Object Notation)
JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and machines to parse.