JSON to Excel Converter

A lot of "JSON to Excel" tools simply rename a CSV to .xls, which makes Excel throw a "file format doesn't match" warning every time you open it. SwitchPDF produces a genuine Office Open XML .xlsx workbook using SheetJS, so it opens cleanly in Excel, Google Sheets, LibreOffice Calc, and Apple Numbers with no warnings.

The conversion turns a top-level array of objects into rows, with the union of all keys becoming the column headers. Nested objects are flattened with dot notation — so { "user": { "name": "Alice", "city": "NYC" } } becomes the columns user.name and user.city — which keeps every value while giving you the flat, tabular shape a spreadsheet needs. Arrays of primitive values are joined into a single comma-separated cell. A single object becomes a one-row sheet.

This is the fastest way to get JSON into a format non-technical colleagues can actually use: hand a stakeholder an .xlsx instead of a wall of braces, drop an export into a reporting workbook, or pull an API dataset into Excel for a pivot table or a quick chart. Everything happens server-side in a second or two, and the file is auto-deleted after 15 minutes.

Need CSV for Google Sheets instead, or a REST API response specifically? Use the JSON to CSV option on the main JSON converter, or the API Response to Excel tool built for exactly that workflow.