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Excel to JSON Converter

Convert Excel (XLSX) spreadsheets to JSON format.

Why Convert Excel to JSON? From Spreadsheets to APIs

Transforming tabular data into a developer-friendly format.

Microsoft Excel and its XLSX format are the undisputed champions of the business world for organizing data in spreadsheets. However, when it comes to the world of web development, APIs, and modern applications, JSON (JavaScript Object Notation) is the language of choice. Our Excel to JSON converter is the essential bridge between these two worlds, allowing developers, data analysts, and content managers to instantly transform structured spreadsheet data into a format that applications can natively understand.

This tool is built on a privacy-first principle. By leveraging the powerful SheetJS (xlsx.js) library, all file parsing and conversion happen directly in your browser. Your sensitive Excel files are never uploaded to a server, guaranteeing that your data remains 100% private and secure.

Key Use Cases for Excel to JSON Conversion:

  • Web Development: Easily convert product catalogs, user lists, or configuration data from an Excel sheet into a JSON array to populate a front-end application or seed a database.
  • API Mocking: Use a simple XLSX file as a data source to quickly generate JSON for mocking an API endpoint during the development and testing phases.
  • Data Visualization: Transform your spreadsheet data into JSON to feed into popular charting libraries like D3.js or Chart.js, which thrive on structured JSON data.
  • Content Management: Migrate structured content from Excel into a headless CMS or static site generator that consumes JSON files.

Ready to streamline your data workflow? Try our free Excel to JSON converter now and experience instant, secure data transformation.

How It Works: Secure Client-Side Conversion

A simple, step-by-step guide to converting your XLSX files.

  1. Upload Your XLSX File: Click the upload area and select your Excel spreadsheet. Our tool processes the file directly in your browser, meaning it's never sent to our servers. Your data's privacy is structurally guaranteed.
  2. Select the Correct Sheet: If your Excel workbook contains multiple sheets, our tool will automatically detect them and show you a dropdown menu. Choose the sheet you wish to convert.
  3. Convert to JSON: Click the "Convert to JSON" button. The tool instantly parses your spreadsheet, using the first row as keys and converting each subsequent row into a JSON object within a larger array.
  4. Copy or Download Your JSON: Your structured JSON output will appear in the output area, beautifully formatted for readability. You can copy it directly or download it as a .json file, ready for your next project. For detailed inspection, paste the output into our JSON Formatter.

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