Use this online Excel to JSON converter to transform Excel and CSV spreadsheets into JSON arrays or objects for APIs, databases, and web applications.

Step 1 – Upload your spreadsheet file
- Upload an .xlsx, .xlsm, .xls, or .csv file.
- An editable spreadsheet preview appears on the left for the selected sheet.
- CSV files open directly in the same spreadsheet preview. Use the dedicated CSV-to-JSON tool only if you need delimiter-specific controls.
Step 2 – Configure conversion options
- Select the worksheet to convert for multi-sheet workbooks. CSV imports appear as a single sheet automatically.
- Enable First row contains headers to use the first row as JSON keys.
- Optionally specify a range (e.g., A1:D100) to convert only part of the sheet.
Step 3 – Review the JSON output
- When headers are enabled, JSON is an array of objects (one per row).
- Edit cells on the left and the JSON output updates automatically by default.
- Check that dates, numbers, and text are correctly formatted in the JSON output.
Step 4 – Copy or download JSON
- Use Copy to send the JSON array to your clipboard.
- Use Download to save as a .json file.
- Import the JSON into databases, send it to APIs, or use it in frontend applications.

Quick tips for Excel to JSON

Keep one header row at the top so each JSON object gets consistent keys.
Dates and numbers are read as they appear in the spreadsheet; double-check them before sending to APIs.
Turn off auto-sync when you want to batch several spreadsheet edits, then use the update button to refresh the JSON once.

Example: Excel spreadsheet to JSON array

// Excel spreadsheet (with headers)
| Name        | Email              | Age | Active |
|-------------|--------------------|-----|--------|
| Maeve       | [email protected] | 28  | true   |
| Alex        | [email protected]   | 32  | false  |

// JSON output
[
  {
    "Name": "Maeve",
    "Email": "[email protected]",
    "Age": 28,
    "Active": true
  },
  {
    "Name": "Alex",
    "Email": "[email protected]",
    "Age": 32,
    "Active": false
  }
]

Related Excel & JSON tools

Work with spreadsheet data and JSON using these complementary conversion and formatting tools.

converter.excelToJson.related.cards.jsonToExcel.title

converter.excelToJson.related.cards.jsonToExcel.description

converter.excelToJson.related.cards.csvToJson.title

converter.excelToJson.related.cards.csvToJson.description

JSON Formatter

Format and validate the JSON output for readability and error checking.

JSON Validator

Validate the generated JSON to ensure correct structure and syntax.

Frequently Asked Questions

What Excel formats are supported?

This tool supports .xlsx, .xlsm (macro-enabled), legacy .xls, and .csv files. Excel workbooks can contain one or many sheets, while CSV files open as a single sheet preview.

How does sheet selection work?

After importing a spreadsheet file, you can select which sheet to convert using the dropdown in settings. Sheet names are detected automatically from Excel workbooks, and CSV files are loaded as a single sheet.

Can I convert specific cell ranges?

Yes. Use the range option in settings to specify a cell range like 'A1:D10'. Leave it empty to convert the entire used range of the selected sheet.

How are headers handled?

When 'First row contains headers' is enabled, the first row values become JSON object keys. When disabled, generic keys like 'Column1', 'Column2' are used.

Is my data secure?

Yes, all data processing happens entirely in your browser. Your spreadsheet file is parsed locally and never sent to any server, ensuring completely private and secure conversion.