What JSON format is supported?

JSON arrays of objects. Each object becomes a row. Single objects are auto-wrapped in an array.

How are types detected?

The tool checks JavaScript types (number, boolean, string) and detects date patterns for appropriate SQL types.

Nested objects and arrays are serialized as TEXT columns in the SQL output.

Yes, completely free. No sign-up required. All processing happens in your browser.

Convert JSON arrays to SQL CREATE TABLE and INSERT statements. Auto-detect schema from JSON objects. Free online tool.

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