JSON to Excel Converter
Turn a JSON array of objects into a downloadable Excel spreadsheet with proper column headers instantly. Free, no signup, works in your browser.
Everything runs inside your browser — your file is never uploaded to a server.
About this tool
Paste or upload a JSON file containing an array of objects, and this tool flattens it into rows and columns ready for a real Excel workbook. It reads every unique key across your objects to build consistent column headers, even when some records have missing fields, and fills gaps with blank cells so the sheet stays tidy. Using the SheetJS library running locally in JavaScript, it builds a genuine .xlsx file rather than a fake CSV renamed as Excel, so formatting, multiple sheets and Excel-native features stay compatible. This is useful for developers exporting API responses, analysts turning JSON logs into reports, or anyone who received data as JSON but needs to share it with colleagues who work in spreadsheets. Nothing is uploaded to a server; the workbook is generated and downloaded directly from your browser.
How to use this tool
1. Add your JSON
Paste JSON text or choose a .json file containing an array of objects.
2. Preview the table
Check the generated columns and rows before exporting.
3. Convert
Click convert to build a proper Excel workbook from your data.
4. Download the file
Save the result as a ready-to-open .xlsx file.
Why use this tool
JSON is great for developers but awkward for anyone working in spreadsheets. This tool bridges that gap instantly, producing a genuine Excel file with clean headers and aligned rows, so teams that live in spreadsheets can work with API data or exported logs without manual reformatting.
Tips & best practices
- Make sure your JSON is a top-level array of objects, not a single nested object, for the cleanest table.
- Flatten deeply nested fields beforehand if you want more readable, separate columns.
- Check the preview for unexpected blank columns caused by inconsistent key names across objects.
Common use cases
- Exporting API response data into an Excel report for stakeholders.
- Turning application logs stored as JSON into a spreadsheet for analysis.
- Sharing JSON survey or form results with non-technical teammates in Excel.
- Converting a JSON product feed into an Excel file for a marketplace upload.
- Preparing JSON analytics exports for a finance or operations review.
Frequently asked questions
Does it handle nested JSON objects?
Nested objects are flattened into readable columns, and arrays are converted into readable text so no data is lost.
What if some records are missing certain fields?
Missing fields simply appear as blank cells in the spreadsheet, keeping every row aligned under the same headers.
Is the output a real Excel file or just a renamed CSV?
It's a genuine .xlsx workbook built with the SheetJS library, fully compatible with Excel, Google Sheets and LibreOffice.
Can I convert a very large JSON array?
Yes, though very large arrays depend on your browser's available memory since everything processes locally.
Is my JSON data uploaded anywhere during conversion?
No, the entire conversion happens in your browser and your data never leaves your device.
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