Data Type Validator & Converter

Overview

Analyze data and automatically generate type declarations for multiple programming languages. Detects data types from sample values and produces ready-to-use code snippets with proper type annotations for R, Python, JavaScript/TypeScript, and SQL. Perfect for migrating data between systems, designing database schemas, or adding type safety to existing codebases.

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Tips

• Enter one value per line to analyze a column of data
• The tool recognizes integers, floats, booleans, strings, dates, datetimes, and null values
• Use the generated code snippets directly in your projects
• Compare how different languages handle the same data types
• For SQL, adjust VARCHAR lengths based on your actual data requirements
• Python type hints include necessary imports from the typing module