JSON to SQL Converter
Convert JSON to SQL online. Turn a JSON array of objects into INSERT statements, optionally with CREATE TABLE. Free JSON to SQL converter in your browser.
JSON
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SQL
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Features
- Turn a JSON array of objects into INSERT statements
- Optional CREATE TABLE with inferred types
- Dialect quoting: Postgres ", MySQL `, SQL Server []
- Snake_case column names from camelCase keys
- Booleans, numbers, dates, JSON nested objects handled
- Runs locally so seed data with emails stays on this device
Common Use Cases
- Seed a local Postgres or SQLite from an API sample
- Turn a fixture JSON into MySQL INSERTs
- Generate CREATE TABLE from a response shape
- Move a small dataset between a mock API and a database
- Build a demo script from copied DevTools JSON
JSON to SQL is a guess, not a migration
Each object key becomes a column. Types are inferred from the values you pasted: integers, floats, booleans, ISO dates, nested objects as JSON. That is a convenience for seeds, not a schema design. Production tables need constraints, indexes, and nullability you still choose.
Need CSV instead of JSON? Use CSV to SQL. Need the other direction later? Export from your database; we do not run SELECT here.
Examples
[{"id":1,"name":"Ada"}][1, 2, 3][]Frequently Asked Questions
Paste a JSON array of objects, pick a dialect and table name, and copy the INSERT statements. Enable CREATE TABLE if you also want a matching table definition.
No. Integer columns become INTEGER (or INT64 on BigQuery). Add identity or sequences yourself.
Literals use dialect-appropriate quoting. Still do not run generated SQL from untrusted JSON on production.
Tips
- Use snake_case when the target style is Postgres.
- Nested objects become JSON/JSONB strings, not child tables.