Excel ↔ JSON Converter

Professional tool for converting Excel spreadsheets to JSON format. Handle multiple sheets, preserve data types, and customize output formatting.

About Excel and JSON Conversion

Converting Excel spreadsheets to JSON format is crucial for modern data integration and API development. Our converter handles complex Excel files while preserving data structure, formatting, and relationships.

Key features of our converter:

  • Support for XLSX and XLS formats
  • Multiple sheet handling
  • Data type preservation (numbers, dates, formulas)
  • Custom date and number formatting
  • Header row detection
  • Empty row handling
  • Large file support
  • Sheet preview before conversion

or drag and drop

Excel files (.xlsx, .xls) or CSV files up to 10MB

General Options

Format Options

About Excel to JSON Conversion

This tool allows you to convert Excel spreadsheets (.xlsx, .xls) and CSV files into JSON format. It supports multiple sheets and various formatting options.

Features include:

  • Multiple sheet support
  • Header row detection
  • Custom date and number formatting
  • Empty row handling
  • Formatted JSON output

Common Use Cases

Data Integration

  • Convert Excel reports to API format
  • Transform legacy Excel data
  • Import spreadsheet data to databases
  • Automate data processing workflows

Business Applications

  • Financial data transformation
  • Inventory management systems
  • Customer data integration
  • Report automation

Advanced Features

Excel Features

  • Multiple sheet support
  • Formula handling
  • Data type detection
  • Custom date formats

JSON Features

  • Nested object support
  • Array handling
  • Pretty printing
  • Minification options

Tips for Better Conversions

Excel Preparation

  • Clean your data first
  • Use consistent formatting
  • Name your sheets logically
  • Remove empty rows/columns

Data Structure

  • Use clear headers
  • Organize data consistently
  • Avoid merged cells
  • Keep formulas simple

Best Practices

  • Preview before converting
  • Check data types
  • Validate the output
  • Back up your files

Frequently Asked Questions

What Excel formats are supported?

Our converter supports modern Excel formats (XLSX) and legacy formats (XLS). It can also handle CSV files and OpenDocument spreadsheets.

How are formulas handled?

Formulas can be exported as their calculated values or as formula strings. You can choose the preferred format in the conversion options.

What about multiple sheets?

You can convert all sheets at once or select specific sheets to convert. Each sheet can be converted to a separate JSON array or combined into a single object.

Is my data secure?

All conversions happen in your browser - no data is sent to our servers. Your spreadsheets remain private and secure.