Private spreadsheet converter

Convert Excel to JSON Online

Convert XLSX and XLS files into clean JSON data directly in your browser. Free, fast, and secure.

Processed locally XLSX/XLS/CSV JSON download

Converter

Convert Excel to JSON

No upload

Drop an Excel or CSV file here

or browse your files · XLSX/XLS/CSV · up to 10 MB

Private by design

Your Excel file never leaves this tab

Your spreadsheet is parsed, previewed, and converted to JSON locally in your browser.

Processed locally

Your Excel file is read and converted right here in this browser tab.

No account required

No sign-up, email, payment details or tracking pixels are needed.

Visible sheets stay separate

Customer lists, reports, exports, and workbook sheets stay on your device until you download the JSON.

No upload: your file is converted in this tab. We do not receive your file name or file content.

Three steps

How to Convert Excel to JSON

Upload your Excel file

Choose an XLSX, XLS, or CSV file from your device. The file is opened locally in your browser.

Select conversion options

Use the first row as field names, keep numbers as numbers, make the JSON readable, and export all visible sheets when needed.

Download JSON file

Review the Excel and JSON previews, then download a clean .json file for apps, imports, automation, or sharing with a developer.

Use cases

Why Convert Excel Files to JSON?

Use in apps and tools

Turn spreadsheet rows into JSON for apps, websites, imports, and automation.

Web applications

Convert product lists, config tables, and no-code exports into a format that frontend apps can consume.

Data migration

Move tabular Excel data into JSON before importing it into databases, CMS platforms, or internal tools.

Automation

Prepare Excel spreadsheet data for repeatable workflows and AI tools without uploading sensitive files.

Example

Excel to JSON Conversion Examples

Excel spreadsheet

Name | Email             | Age
Alice | alice@example.com | 30
Bob   | bob@example.com   | 28

JSON output

[
  {
    "Name": "Alice",
    "Email": "alice@example.com",
    "Age": 30
  },
  {
    "Name": "Bob",
    "Email": "bob@example.com",
    "Age": 28
  }
]

Multiple sheets

Convert XLSX Sheets to JSON

When a workbook has multiple visible sheets, the converter can keep each sheet under its own sheet name in the JSON file. Hidden and very hidden worksheets are skipped for privacy. If you need one CSV per visible worksheet instead, use the XLSX to CSV converter; for AI uploads, compare the tradeoffs in the XLSX vs CSV guide.

{
  "Customers": [
    { "name": "Alice", "plan": "Pro" }
  ],
  "Orders": [
    { "order_id": 1001, "total": 49.99 }
  ]
}

Good to know

Frequently Asked Questions

How do I convert Excel to JSON?

Upload an Excel file, choose whether the first row should become field names, preview the result, then download the converted JSON file.

Can I convert XLSX to JSON?

Yes. This tool converts XLSX files to JSON without installing Excel, and it runs directly in your browser.

Can JSON preserve Excel data types?

Numbers and true/false values can stay as JSON values. You can turn this off when you prefer formatted text from the spreadsheet.

Is this Excel to JSON converter free?

Yes. It is free to use, requires no account, and processes files locally in your browser.

Does it work with XLS files?

Yes. The converter accepts modern .xlsx files, legacy .xls files, and .csv files.

Can I convert an Excel file to JSON with multiple sheets?

Yes. Each visible sheet can be exported under its sheet name, so separate sheets stay organized. Hidden sheets are skipped for privacy.

Is my Excel file uploaded to a server?

No. Your Excel file stays in your browser and is not uploaded to our servers.

More converters

Related Data Converters

Ready to turn Excel into JSON?

Choose an Excel file and create JSON without uploading anything.

Go to converter