JSON → Excel (XLSX)

Client

Paste JSON and download an .xlsx workbook: arrays of objects become tables with headers, 2D arrays land as raw grids, and objects whose values are all arrays become multiple worksheets. Pair with Excel → JSON for the opposite direction or CSV ↔ JSON when plain text is enough.

Learn more: JSON to Excel export

Serialize JSON into a binary .xlsx you can open in Excel or LibreOffice—same browser session, no upload.

Shapes that map cleanly

Arrays of objects become tables with inferred columns. Nested arrays become worksheet grids. An object whose values are all arrays becomes multiple tabs keyed by property names.

Opposite direction

To read an existing workbook back into JSON, use the Excel → JSON tool on the same hub—imports stay client-side there too.

JSON → Excel (XLSX)

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Paste a JSON array of objects for a table, a 2D array for raw rows, or an object of sheet names where each value is an array (multi-tab workbook). Nested JSON values become text cells. Export runs locally.

Ready — workbook will have 1 sheet.

Common use cases

  • Ship a quick spreadsheet from API fixture JSON when stakeholders expect Excel instead of raw JSON.
  • Split metrics into separate tabs by exporting `{ "Summary": [...], "Details": [...] }` as a multi-sheet file.
  • Preserve a rectangular grid from nested tooling by feeding a 2D JSON array straight into cells.

Common mistakes to avoid

  • Mixing object rows and array rows in the same JSON array

    Each sheet must be either all objects (for labeled columns) or all arrays (for a fixed grid). Split mixed content across sheets or normalize first.

  • Expecting Excel formulas or charts

    This exporter writes stored cell values and structure only—no formulas, macros, or chart objects.

FAQ

Is my JSON uploaded?

No. Parsing and .xlsx creation run entirely in your browser tab.

How do multi-sheet workbooks work?

Use a JSON object whose keys become worksheet names and whose values are arrays—each array becomes one sheet (objects → table, nested arrays → grid).

What about dates and nested objects?

Nested structures stringify into the cell text Excel shows. Dates stay as JSON numbers or strings depending on your source—adjust upstream if you need Excel date types.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

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More tools

Related utilities you can open in another tab—mostly client-side.