Excel to JSON
Convert an Excel sheet to JSON data.
Drop a file here, or click to browse
Rows become JSON objects keyed by the header row.
About the Excel to JSON Converter
Convert an Excel or CSV sheet into JSON — ideal for developers, APIs and config. Each row becomes an object keyed by the header row, and multi-sheet workbooks become a JSON object per sheet. Runs entirely in your browser.
How to use it
- Drop your Excel or CSV file onto the box, or click to browse.
- Click Convert to JSON.
- Rows are turned into JSON objects using the header row as keys.
- Download the .json file.
Developers use this to seed databases, feed APIs or generate config from a spreadsheet without writing a parser. The conversion is local to your browser, so your data stays private.
Frequently asked questions
How are rows mapped to JSON?
The first row is treated as keys, and each following row becomes an object with those keys. Single-sheet files return an array; multi-sheet files return an object keyed by sheet name.
Does it support CSV too?
Yes, CSV and Excel (XLSX/XLS) are all supported.
Is my data uploaded?
No. Excel to JSON runs entirely in your browser — nothing is sent to a server.
What about empty cells?
Empty cells are included as empty strings so every object has a consistent set of keys.