Clipboard ToolsClipboardTools

Excel to JSON Converter Online – Free Tool

Transform your Excel spreadsheets and tabular data into clean, properly formatted JSON with our free online converter. Whether you're building REST APIs, configuring web applications, seeding databases, or integrating data between systems, this tool makes the conversion process instant and effortless. Simply paste your Excel table data—complete with column headers—and get perfectly structured JSON output ready for immediate use. Our client-side processing ensures your sensitive business data stays private and never leaves your browser, making it ideal for converting financial records, customer information, inventory lists, and any confidential spreadsheet data you need in JSON format.

Transformations
Output Format

How It Works

1

Copy Your Excel Data

Open your Excel spreadsheet or Google Sheets document and select the data range you want to convert, including the header row. Press Ctrl+C (or Cmd+C on Mac) to copy the cells to your clipboard.

2

Paste Into the Converter

Click the input area above and paste your copied data (Ctrl+V or Cmd+V). The tool automatically detects your table structure, identifies column headers, and parses each row of data.

3

Configure Output Options

Choose your preferred JSON format—objects with named keys or compact arrays. Apply optional transformations like removing duplicates, trimming whitespace, or adjusting text case.

4

Copy Your JSON

Click "Copy to Clipboard" or press Ctrl+Enter to copy the formatted JSON. Paste it directly into your code editor, API testing tool, configuration file, or database import interface.

Use Cases for Excel to JSON Conversion

API Payload Generation

Convert Excel product catalogs, user lists, or order data into JSON payloads for REST API calls. Perfect for bulk imports, data migration scripts, and integration testing with tools like Postman or Insomnia.

Configuration Files

Transform spreadsheet-based settings, feature flags, or environment configurations into JSON config files. Ideal for application settings, i18n translation files, and dynamic content management.

Web Application Data

Convert Excel tables into JSON for React, Vue, or Angular applications. Create static data files for client-side rendering, populate dropdown options, or generate mock data for frontend development.

Database Seeding

Prepare Excel data for MongoDB, Firebase, or other NoSQL databases that use JSON document formats. Create seed files for development environments or prepare bulk insert operations for production migrations.

Why Use This Excel to JSON Converter?

  • 100% Client-Side Processing – Your data never leaves your browser, ensuring complete privacy for sensitive spreadsheets
  • No Registration Required – Start converting immediately without creating accounts or providing email addresses
  • Automatic Header Detection – The tool recognizes your first row as column headers and uses them as JSON property keys
  • Multiple JSON Formats – Choose between objects with named keys or compact array format based on your needs
  • Column Selection – Include only the columns you need in your JSON output, filtering out unnecessary data
  • Data Cleaning Options – Remove duplicates, trim whitespace, and transform text case during conversion
  • Works with Any Spreadsheet – Compatible with Microsoft Excel, Google Sheets, LibreOffice Calc, and any application that copies tab-separated data
  • Instant Preview – See your formatted JSON output in real-time as you paste and configure options

Frequently Asked Questions

How do I convert an Excel spreadsheet to JSON format?

Simply copy your Excel data (including headers) and paste it into the input field above. The tool automatically detects your table structure and converts it to JSON format. You can choose between JSON objects (each row becomes an object with header keys) or JSON arrays (each row becomes an array of values).

Does this tool support Excel files with multiple columns?

Yes, this converter handles multi-column Excel data seamlessly. Each column header becomes a property key in the resulting JSON objects. You can also select which columns to include in your output using the column selector.

Is my Excel data secure when using this converter?

Absolutely. All data processing happens entirely in your browser using client-side JavaScript. Your spreadsheet data never leaves your computer or gets sent to any server. This makes it safe to convert sensitive business data, financial information, or personal records.

What's the difference between JSON objects and JSON arrays output?

JSON objects format creates an array of objects where each row becomes {"header1": "value1", "header2": "value2"}. JSON arrays format creates nested arrays like [["value1", "value2"], ["value3", "value4"]]. Objects are better for APIs and databases, while arrays are more compact for data transfer.

Can I convert Google Sheets data to JSON?

Yes! Google Sheets works exactly the same way. Select your data range in Google Sheets, copy it (Ctrl+C or Cmd+C), and paste it into the converter. The tab-separated format from Google Sheets is automatically detected and parsed correctly.

How do I handle Excel data with special characters or formatting?

The converter automatically handles special characters, escaping them properly for valid JSON output. Leading/trailing whitespace is trimmed by default, and you can use the text transformation options to standardize case or remove punctuation before conversion.

Related Tools

Explore more data conversion and formatting tools to streamline your workflow: