Convert SQL to JSON Online - Free, Local & Instant
Instant SQL (.sql) to JSON (.json) converter. 100% client-side processing in your browser RAM — zero file uploads, full privacy, drag & drop or paste raw text.
Technical Comparison: SQL vs JSON
Data & Dev Config| Specification | SQL (Source) | JSON (Target) |
|---|---|---|
| Full Specification | Structured Query Language (CREATE + INSERT statements) | JavaScript Object Notation |
| File Extension & MIME | .sql (application/sql) | .json (application/json) |
| Data Typing Model | Typed relational columns (INTEGER, REAL, BOOLEAN, VARCHAR, TEXT) | Strict (strings, numbers, booleans, arrays, objects, null) |
| Structure & Hierarchy | Relational table schema with batch INSERT tuples | Deeply nested trees & arrays |
| Comments Support | Supported (-- single line and /* block */) | Not supported in RFC 8259 (supported via relaxed parser) |
| Primary Ecosystem | PostgreSQL, MySQL, SQLite, MariaDB, Supabase database seeding | REST APIs, web apps, NoSQL document stores, modern configs |
SQL to JSON — Before & After Example
CREATE TABLE my_table ( id INTEGER, name VARCHAR(255), email VARCHAR(255), role VARCHAR(255), active BOOLEAN, score REAL, "address.city" VARCHAR(255), "address.country" VARCHAR(255) ); INSERT INTO my_table (id, name, email, role, active, score, "address.city", "address.country") VALUES (1, 'Alice Johnson', 'alice@example.com', 'admin', TRUE, 98.5, 'Berlin', 'DE'); INSERT INTO my_table (id, name, email, role, active, score, "address.city", "address.country") VALUES (2, 'Bob Smith', 'bob@example.com', 'editor', FALSE, 87, 'Austin', 'US'); INSERT INTO my_table (id, name, email, role, active, score, "address.city", "address.country") VALUES (3, 'Chiara Rossi', 'chiara@example.com', 'viewer', TRUE, 91.25, 'Milan', 'IT');
[
{
"id": 1,
"name": "Alice Johnson",
"email": "alice@example.com",
"role": "admin",
"active": true,
"score": 98.5,
"address": {
"city": "Berlin",
"country": "DE"
}
},
{
"id": 2,
"name": "Bob Smith",
"email": "bob@example.com",
"role": "editor",
"active": false,
"score": 87,
"address": {
"city": "Austin",
"country": "US"
}
},
{
"id": 3,
"name": "Chiara Rossi",
"email": "chiara@example.com",
"role": "viewer",
"active": true,
"score": 91.25,
"address": {
"city": "Milan",
"country": "IT"
}
}
]
Frequently Asked Questions: SQL to JSON
How do I convert SQL to JSON online without uploading sensitive files? ▾
Paste your SQL data or drag and drop a .sql file into the converter above. ZeroUpload parses SQL and serializes JSON 100% inside your browser RAM using local JavaScript—no bytes are ever sent to an external server.
How are nested objects or tabular columns mapped between SQL and JSON? ▾
When converting hierarchical structures (Relational table schema with batch INSERT tuples) and tabular or config formats (Deeply nested trees & arrays), our engine automatically flattens or unflattens dot-separated keys (such as address.city) and preserves numbers, booleans, arrays, and null values.
Is this SQL to JSON converter free for commercial and production config files? ▾
Yes. The tool is completely free, requires no account or API key, and works offline once loaded. Because execution happens in local memory, it is safe for proprietary SQL, database exports, and production secrets.
Can I convert JSON back to SQL? ▾
Yes! Click the "Swap (JSON → SQL)" button at the top of the workspace or use the reverse converter link at the bottom of this page for bidirectional conversion.