Excel to JSON

Convert Excel XLSX/XLS files to JSON format

Max file size: 10MB. Supports XLSX, XLS
0 = first sheet, 1 = second sheet, etc.
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Free Online Excel to JSON Converter - Convert XLSX to JSON Format

Why Use Our Excel to JSON Converter?

Our Excel to JSON converter is a powerful free online tool that allows you to instantly transform Excel spreadsheets (XLSX, XLS) into JSON (JavaScript Object Notation) format. Whether you need to convert Excel to JSON for web applications, REST APIs, JavaScript projects, or NoSQL databases, our tool handles the conversion with intelligent structure mapping and data preservation.

Simply upload your Excel file, select which sheet to convert, then click "Convert to JSON" to get your formatted JSON output instantly. Perfect for developers, API designers, and anyone bridging Excel and modern web technologies!

Key Features

  • Multi-format support - XLSX, XLS spreadsheets
  • Sheet selection - Choose specific sheet to convert
  • Smart conversion - Excel rows become JSON array of objects
  • Header mapping - First row headers become JSON keys
  • Free to use - No registration or subscription required
  • Secure & Private - Files automatically deleted after processing

Lightning Fast

Convert Excel to JSON instantly with clean output

100% Secure

Your Excel files are processed securely and automatically deleted

Developer Friendly

Excel to JSON conversion with proper formatting

How to Convert Excel to JSON Online

  1. Upload your Excel file - Select an XLSX or XLS file (max 10MB).
  2. Select sheet - Specify which sheet to convert (0 = first sheet, 1 = second sheet, etc.).
  3. Set header option - Check "First row contains headers" to use Excel headers as JSON keys.
  4. Click "Convert to JSON" - Our Excel to JSON converter will transform your spreadsheet data.
  5. Download JSON file - Get your clean, formatted JSON ready to use in applications or APIs.

Common Use Cases for Excel to JSON Conversion

Our Excel to JSON online converter is perfect for various development and integration tasks:

  • API Development: Convert Excel data to JSON for REST API testing
  • Web Applications: Transform Excel tables to JSON for JavaScript apps
  • NoSQL Databases: Import Excel data to MongoDB, CouchDB via JSON
  • Configuration Files: Convert Excel configs to JSON format
  • Data Migration: Move Excel data to JSON-based systems
  • Mock Data: Create JSON test data from Excel spreadsheets

Output JSON Format

How our Excel to JSON converter structures your data:

  • Array of objects: Each Excel row becomes a JSON object in an array
  • Headers as keys: First row values become property names for all objects
  • Pretty printed: JSON output is formatted for readability
  • UTF-8 encoded: Properly handles international characters and special symbols
Pro Tip: When converting Excel to JSON, ensure your first row contains unique column names if using the "First row contains headers" option - these become JSON property keys. For Excel files with multiple sheets, note the sheet index (0 for first sheet) before conversion. The output JSON is an array of objects where each row becomes one object with keys from the header row. Perfect for quickly creating JSON test data or migrating Excel data to modern web applications!

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