Excel to JSON Converter - Free Online Tool | Unleashed Excel

Convert Excel files to JSON and vice versa with advanced formatting options. Perfect for developers and data analysts.

Conversion Direction

Convert Excel file to JSON format
Convert JSON data to Excel file

Upload Excel File

Drop Excel file here or click to browse

Support for .xlsx, .xls files (Max 10MB)

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Sample Files for Testing

Download sample files to test JSON conversion:

Sample Excel Data
Convert to Excel first, then test JSON conversion

Need Help?

Having trouble with this tool? Our support team is here to help.

Contact Support

How to Use Excel to JSON Converter - Free Online Tool | Unleashed Excel

I'll guide you through converting between Excel and JSON formats. This is incredibly useful for web developers and data analysts who need to work with data in different formats.

Converting Excel to JSON:

Step 1: Choose Conversion Direction

Select "Excel → JSON" from the conversion options.

Step 2: Upload Your Excel File

Upload your Excel file (.xlsx or .xls, max 10MB). The tool will read your data and prepare it for conversion.

Step 3: Configure JSON Settings

  • Sheet Selection: Choose to convert the first sheet only or all sheets
  • JSON Format: Select from Array of Objects, Single Object, or Nested Structure
  • Row Limit: Set a limit for large files to ensure smooth performance
  • Include Empty Rows: Decide whether to include rows with no data

Step 4: Convert and Download

Click "Convert to JSON" and download your JSON file or copy the data to clipboard.

Converting JSON to Excel:

Step 1: Choose JSON to Excel

Select "JSON → Excel" from the conversion options.

Step 2: Enter Your JSON Data

Paste your JSON data into the text area. You can validate it first using the "Validate JSON" button.

Step 3: Configure Excel Settings

  • Sheet Name: Choose a name for your Excel sheet
  • Data Structure: Let the tool auto-detect or specify your JSON structure

Step 4: Convert and Download

Click "Convert to Excel" to create your Excel file.

Pro Tips for Best Results:

  • For Excel to JSON: Ensure your Excel data has proper headers in the first row
  • For JSON to Excel: Validate your JSON first to catch any syntax errors
  • Large datasets are automatically limited to ensure smooth performance
  • Use consistent data types within columns for better conversion results

Frequently Asked Questions

The tool supports standard JSON formats including arrays of objects (most common), single objects, and nested structures. It can handle both simple flat data and complex hierarchical data structures.

Large datasets can cause performance issues. I've set reasonable limits (1,000 to 10,000 rows) to ensure smooth operation. For larger datasets, consider splitting your data into smaller chunks.

Excel formulas are converted to their calculated values in JSON. The JSON format doesn't support formulas, so you'll get the results of the calculations, not the formulas themselves.

Yes! When you select "All Sheets", the tool creates a JSON object where each sheet becomes a property containing its data. This preserves the structure of multi-sheet workbooks.

Common JSON errors include missing quotes around strings, trailing commas, and unmatched brackets. Use the "Validate JSON" button to identify issues, then fix them in your JSON data before converting.

JSON doesn't preserve Excel formatting like colors, fonts, or cell styles. The conversion focuses on data content. If you need formatting preserved, consider using Excel's native import/export features instead.

What does this tool do?

This tool converts Excel files into JSON and JSON back into Excel, with formatting options for the JSON structure. Everything runs in your browser.

How to use Excel to JSON Converter - Free Online Tool | Unleashed Excel

  1. Upload an Excel file or paste/upload JSON.
  2. Choose the conversion direction.
  3. Pick formatting options such as pretty-printing for JSON.
  4. Click Convert.
  5. Download or copy the result.

Example

Converting a sheet to JSON:

Before

Name Age
Ali 30

After

JSON
[{"Name":"Ali","Age":30}]

Each row becomes a JSON object keyed by the header row.

Excel formula alternative

Prefer a formula? You can achieve a similar result with Power Query:

Power Query can parse JSON, but not export it directly

Excel has no built-in Excel-to-JSON export. This tool fills that gap and works both ways.

When should I use this tool?

Feeding spreadsheet data into web apps and APIs
Turning API JSON responses into a spreadsheet
Preparing config or seed data for developers
Converting between analyst and developer formats
Quick data inspection in a readable structure
Bulk-loading records into NoSQL stores

Frequently Asked Questions

No. Conversion is done in your browser; nothing is sent to a server.

Yes. The first row's column names become the keys for each JSON object.

Yes. You can choose readable, indented JSON or compact single-line output.

Yes. Paste or upload a JSON array of objects and the tool builds an Excel sheet from it.

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