Excel to JSON Converter – Free Online | JsonToTable

DelimiterFirst row is headersInfer numbers / booleans

Excel / Table Paste

JSON Output

Converted JSON will appear here

Upload an Excel workbook, or copy a rectangular range from Excel / Google Sheets and paste on the left.

Three product rows with price and stock columns

Conversion runs in your browser. Spreadsheet files and pasted cells never leave this device. Upload .xlsx / .xls / .xlsm (first sheet by default; pick another sheet when the workbook has several), or paste cells / upload CSV/TSV.

How to Convert Excel to JSON

Upload .xlsx / .xls, paste a spreadsheet range, or upload CSV/TSV. The Excel to JSON converter builds an array of objects in your browser.

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Step 1 – Copy Cells from Excel or Sheets

Upload a .xlsx / .xls workbook, or select a rectangular range that includes a header row and copy it (Ctrl/Cmd+C). CSV/TSV uploads still work. For comma-heavy files you can also use the CSV to JSON converter.

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Clipboard paste - Excel and Google Sheets copy as tab-separated text.

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Excel + CSV upload - .xlsx / .xls workbooks, or CSV/TSV text files.

Sample Excel paste (TSV)

sku	product	price	in_stock	updated_at
A-100	Notebook	12.5	TRUE	2026-10-01
B-200	Pen set	3	FALSE	2026-10-05
C-300	Stapler	9.99	TRUE	2026-10-09

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Step 2 – Check Headers and Types

Confirm the first row is headers, pick Tab when pasting from Excel, and decide whether numbers and TRUE/FALSE should become JSON types.

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Header keys - Blank headers become column_1, column_2, …

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Type inference - Optional numbers, booleans and nulls.

Excel to JSON output

[
  {
    "sku": "A-100",
    "product": "Notebook",
    "price": 12.5,
    "in_stock": true,
    "updated_at": "2026-10-01"
  },
  {
    "sku": "B-200",
    "product": "Pen set",
    "price": 3,
    "in_stock": false,
    "updated_at": "2026-10-05"
  },
  {
    "sku": "C-300",
    "product": "Stapler",
    "price": 9.99,
    "in_stock": true,
    "updated_at": "2026-10-09"
  }
]

3

Step 3 – Copy or Download the JSON

Copy the JSON array or download a .json file. Need a spreadsheet again later? Use JSON to Excel.

⬇️

Download .json - Saves excel-to-json-<date>.json.

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Copy - Copy the JSON array to your clipboard.

⚡Copy or download the converted JSON

2 Actions

⬇️

Download

Save as excel-to-json-<date>.json

📋

Copy

Copy JSON to clipboard

💡Tip: keep a header row so keys stay meaningful.

Excel to JSON FAQs

Excel to JSON questions about .xlsx upload, clipboard paste, types, dates and privacy

How do I convert Excel to JSON?

Upload a .xlsx or .xls workbook, or select cells in Excel / Google Sheets, copy them, and paste into the Excel to JSON converter. The first row becomes object keys and each following row becomes one JSON object. CSV and TSV uploads still work.

Can I upload an .xlsx file?

Yes. Upload .xlsx, .xls, or .xlsm. Parsing runs entirely in your browser with SheetJS — the file is never sent to our servers. Multi-sheet workbooks default to the first sheet; use the Sheet menu to switch.

Is my spreadsheet uploaded to a server?

No. The Excel to JSON converter parses the paste or file entirely in your browser. Nothing is sent to our servers for this page.

How are numbers and TRUE/FALSE handled?

With type inference on, numeric cells become JSON numbers and TRUE/FALSE become booleans. Values with leading zeros (for example 00123) stay strings so product codes are not altered. Turn inference off to keep every cell as a string.

What about Excel dates?

Uploaded workbooks use the formatted text Excel shows in the cell when available. Pasted dates arrive as the text Excel displays (for example 2026-10-09 or 10/9/2026), not as OLE serial numbers. Keep them as strings or parse them in your own code after export.

How is this different from CSV to JSON?

CSV to JSON is tuned for comma-separated files with delimiter auto-detection. Excel to JSON focuses on real Excel workbooks, tab-separated clipboard paste, table-to-JSON workflows, and CSV/TSV as a side path. Use JSON to Excel when you need the reverse direction.

Does the tool support multiple sheets?

Yes for uploaded workbooks: the first sheet is selected by default and a Sheet picker appears when more than one sheet exists. Paste still converts one range at a time.

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