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 Excel to JSON

Convert Excel to JSON directly in your browser. Upload an .xlsx or .xls file, choose one worksheet or export all worksheets, configure JSON options, and download a ready-to-use JSON file for APIs, web development, databases, and data analysis.

๏ปฟ
Step 1 - Upload Excel file
All processing happens locally in your browser. Files are not uploaded or stored.
Step 2 - Choose worksheet(s)
Available worksheets
Step 3 - Export options
Columns and rows
JSON output
Dates
Step 4 - JSON preview
Rows-
Columns-
Selected worksheet-
JSON file size-
Preview shows the first 10 JSON objects.
No data processed yet.
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Privacy: data stays in browser memory and is removed on refresh/close.

โญ Excel to JSON converter - explanation and examples

With Excel to JSON, you can quickly convert spreadsheets into JSON for APIs, web apps, databases, and data analysis. Upload a .xlsx or .xls file, choose one or multiple worksheets, and download your JSON output instantly. Everything runs locally in your browser with no server upload.

๐Ÿ”Ž Which Excel to JSON export mode can you choose?

  • All worksheets: output as a JSON object with one property per worksheet.
  • One specific worksheet: output as a JSON array of objects.
  • First row as field names: columns become JSON keys automatically.
  • Skip empty rows: fully empty records are excluded.

โš™๏ธ Columns, empty values, and dates

The Excel JSON converter trims spaces around column names and automatically replaces empty column names with column_1, column_2, and so on. For empty cells, you can choose null or omit empty fields entirely. Dates can be exported as ISO 8601 or in the original Excel display format.

๐Ÿ“Š Preview and validation before download

Before downloading, you see a preview of the first 10 JSON objects plus practical stats: row count, column count, selected worksheet, and JSON file size. This helps you quickly validate that your Excel export to JSON is correct.

๐Ÿงช Example: XLSX to JSON for API use

  1. Upload your XLSX file with product data.
  2. Select a single worksheet such as products.
  3. Use the first row as field names.
  4. Choose ISO 8601 date output for consistent API data.
  5. Download the JSON file and use it directly in your backend or frontend.

โš ๏ธ Privacy and security

This spreadsheet to JSON tool runs fully client-side. Your file is not uploaded, not stored, and exists only temporarily in browser memory. Data is removed when you refresh or close the page.

This tool is also known as

  • excel to json converter
  • xlsx naar json online
  • xlsx to json online
  • excel converter to json
  • spreadsheet to json tool
  • xls to json converter

Frequently Asked Questions

This tool converts an Excel file (.xlsx or .xls) to JSON. You can export one worksheet as a JSON array or export all worksheets as a JSON object with multiple properties.

Yes. You can import both modern .xlsx and older .xls spreadsheets and convert them to JSON.

Yes. Choose all worksheets and the output becomes one JSON object where each worksheet has its own key.

Yes. Select a specific worksheet and you will get a JSON array of objects for that sheet only.

If you use the first row as field names, values are trimmed. Empty column names are automatically replaced with names like column_1, column_2, and so on.

Completely empty rows are automatically skipped. For empty cells, you can choose to include null values or omit empty fields in JSON.

Yes, as much as possible. Numbers and booleans keep their original types. Dates can be exported as ISO 8601 or in the original Excel display format.

Yes. You can choose between pretty-printed JSON (indented) or minified JSON without extra whitespace.

Yes. The tool shows a preview of the first 10 JSON objects plus stats like row count, column count, selected worksheet, and JSON file size.

The tool shows a clear error message, for example when the file is invalid, unreadable, or possibly corrupted.

You get an error message saying the worksheet has no data to export, so you can choose another worksheet or file.

Yes. All processing happens locally in your browser. There is no server upload, and data disappears when you refresh or close the page.

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