Turn spreadsheets into developer-ready data.
Convert Excel, CSV, JSON, and YAML instantly. No uploads. No accounts. Just clean data.
Data Conversion Tools
Select a tool to get started
CSV → JSON
Convert comma-separated values to JSON array
JSON → CSV
Transform JSON arrays into CSV format
CSV → YAML
Convert CSV data to YAML format
YAML → JSON
Parse YAML and output as JSON
Excel → JSON
Read Excel files and convert to JSON
JSON → YAML
Convert JSON data to YAML format
CSV → SQL INSERT
Generate SQL INSERT statements from CSV
CSV → Markdown
Convert CSV to Markdown table format
JSON → C#
Generate C# classes from JSON
Why Use XLGen?
All conversions happen directly in your browser. Your data never leaves your device, ensuring complete privacy and security. No server uploads, no accounts required.
What is CSV to JSON?
CSV (Comma-Separated Values) is one of the most common formats for storing tabular data. JSON (JavaScript Object Notation) is the standard data interchange format used in modern web applications and APIs. Converting CSV to JSON transforms flat, tabular data into a structured, hierarchical format that is easy to parse and manipulate programmatically.
Why Developers Convert Spreadsheet Data
Developers frequently need to transform data between formats for various reasons: importing data into databases, feeding data to APIs, configuration management, testing, and data migration. XLGen provides instant, client-side conversions that respect your privacy and work entirely in your browser without sending data to any server.