About
☰
All Tools
Categories
Blog About

Excel to JSON Converter – Convert XLSX & XLS to JSON Online

Convert Excel files to JSON instantly with automatic header detection, multi-sheet support, and formula evaluation—all offline.

🟢 Runs locally · no uploads

Excel to JSON Converter

Convert Excel files to JSON format

Excel File Upload
JSON Output
code

JSON output will appear here

Characters: 0Records: 0Size: 0 KB

lightbulbPopular Use Cases

analytics
Sales & Analytics Data

Convert Excel sales reports and analytics data for web dashboards and visualizations

contacts
Customer & Contact Lists

Import Excel contact databases into CRM systems and applications

inventory_2
Inventory & Product Catalogs

Convert product data from Excel into JSON for e-commerce platforms and APIs

account_balance
Financial Reports

Transform Excel financial statements into JSON for accounting software and analysis tools

keyboardKeyboard Shortcuts

keyboardShow shortcutsexpand_more
Ctrl+LClear all

Related tools

Show more

JSON to Excel Converter - Convert JSON to XLSX CSV Online

Stop manually copying JSON data into Excel! Convert JSON to Excel (XLSX) or CSV spreadsheets instantly with automatic nested object flattening and array handling. Perfect for exporting API responses, database dumps, and analytics data. Free, works offline, no server uploads, unlimited conversions.

CSV to JSON Converter

Stop manually reformatting CSV spreadsheets into JSON! Convert CSV to JSON instantly with automatic data type detection, custom delimiters, and flexible output formats. Perfect for API integration and data migration. Free, works offline, handles large files.

JSON Formatter & Validator

Stop squinting at minified JSON! Format and validate JSON instantly with automatic error detection, syntax highlighting, and pretty printing. Catches missing quotes, trailing commas, and invalid syntax. Works with JSON and JSONC. Perfect for debugging API responses and config files. Free, works offline, unlimited usage.

Data Format Transformer

Transform data between multiple formats including JSON, YAML, CSV, XML, TOML, INI, and Properties with structure preservation and advanced options.

CSV Table Viewer - View CSV Files Online as Interactive Tables

Free online CSV table viewer that displays CSV files as interactive tables with search, sort, and filter capabilities. Analyze CSV data with detailed statistics, handle large datasets, and export results.
Show more

JSON to CSV Converter - Get Table Data from JSON

Stop manually copying JSON data into spreadsheets! Convert JSON arrays to CSV format instantly with automatic header detection, nested object flattening, and Excel compatibility. Perfect for exporting API responses and database queries. Free, works offline, handles large datasets.

JSON to XML Converter

Stop manually converting JSON to XML! Transform JSON data to well-formed XML with customizable formatting, attribute handling, and namespace support. Perfect for API integration, data interchange, and legacy system compatibility. Free, works offline, unlimited conversions.

XML to JSON Converter

Stop manually reformatting XML data into JSON! Convert XML to JSON format instantly with automatic attribute handling, namespace support, and array detection. Perfect for API integration and data transformation. Free, works offline, handles complex XML structures.

JSON to TypeScript Interface - Get Types from JSON Data

Stop manually writing TypeScript interfaces for API responses! Convert JSON to TypeScript interfaces instantly with support for nested objects, optional properties, and union types. Completely free, works offline in your browser, no file uploads.

Markdown ↔ HTML Converter

Stop manually converting between Markdown and HTML! Convert Markdown to HTML or HTML to Markdown instantly with support for GitHub Flavored Markdown, tables, task lists, code syntax highlighting, and nested structures. Perfect for documentation, blogging, and static site generators. Free, works offline, bidirectional conversion.
› About this tool · FAQ

Stop manually copying spreadsheet data into JSON! Convert Excel (XLSX, XLS) to JSON format instantly with automatic header detection, multi-sheet support, and data type preservation. Perfect for API development and data migration. Free, works offline, handles large files up to 25MB.

How do I convert Excel to JSON?

Upload your Excel file (XLSX or XLS), configure options like header detection and sheet selection, then click Convert to JSON. The tool processes your spreadsheet instantly and generates formatted JSON output ready for download or copying.

Is this Excel to JSON converter free?

Yes, completely free with no limits on conversions or file size (up to 25MB). No registration required, no watermarks. All processing happens in your browser for complete privacy.

Are my Excel files uploaded to servers?

No, all Excel processing happens locally in your browser using SheetJS technology. Your files never leave your computer, ensuring complete privacy and security for sensitive business data.

What Excel file formats are supported?

Supports Excel files (.xlsx, .xls) and OpenDocument Spreadsheets (.ods). Maximum file size is 25MB to ensure optimal browser performance during conversion.

Can I convert multiple sheets from one Excel file?

Yes, you can convert all sheets, just the first sheet, or a specific sheet by name. Multi-sheet conversions include metadata about each sheet and its structure for organized JSON output.

How are Excel data types handled in JSON?

Numbers remain as numbers, text as strings, dates can be converted to ISO format or timestamps, and formulas are converted to their calculated values. Empty cells can be included or excluded based on your settings.

What if my Excel file has merged cells or complex formatting?

The converter focuses on data extraction and may not preserve complex formatting or merged cell structures. It works best with tabular data where each row represents a record.

Can I use the first row as column headers?

Yes, you can enable "First row as headers" to use the first row values as JSON object keys. If disabled, columns will be named automatically (A, B, C, etc.).

What output formats are available?

Choose from Array (simple JSON array), Object (JSON objects with headers), or Nested (includes metadata about sheets, rows, and conversion settings). Pick the format that best fits your use case.