Excel to JSON

Convert Excel spreadsheets (`.xlsx`, `.xls`) and CSV files into clean formatted JSON objects or array structures. Upload files or paste CSV data to preview formatted JSON instantly.

Why Use This Tool?

• Data Import & Migration: Convert client Excel spreadsheets into JSON arrays for database seeding or REST API payloads.
• Frontend Mocking: Turn CSV product sheets into mock JSON datasets for frontend web app development.
• Client-Side Processing: Convert confidential financial spreadsheets to JSON without uploading files to external servers.

How to Use

1. Upload an `.xlsx`, `.xls`, or `.csv` spreadsheet file (or paste CSV text).
2. Select Sheet Name and Header Row options.
3. View prettified JSON output and copy or download as `.json` file.

Real Working Example

Input:

Excel File: Sheet1 (Columns: Name, Email, Role)
Row 1: John Doe, john@example.com, Developer

Output Result:

JSON Result:
[
  {
    "Name": "John Doe",
    "Email": "john@example.com",
    "Role": "Developer"
  }
]

Important Technical Details & Specifications

• SheetJS (XLSX) Engine: Uses SheetJS library to parse binary Excel `.xlsx`/`.xls` workbooks in browser WebAssembly/JS.
• PapaParse CSV Engine: Uses PapaParse for fast CSV multi-line streaming parsing.
• 100% Local Privacy: Excel spreadsheet files are read locally in browser memory without server uploads.

Related Data & Format Tools

• CSV & Data Chart Generator: Render interactive charts from CSV data.
• JSON to CSV Converter: Convert JSON arrays to CSV spreadsheets.
• NDJSON Converter: Convert JSON arrays to NDJSON lines.