SQL to JSON Converter - Free Online Tool

How SQL-to-JSON Conversion Works

This tool parses INSERT INTO statements, box-drawn SELECT results copied from a CLI, CREATE TABLE schemas, and UPDATE statements, mapping each row to a JSON object using the column names as keys. Strings, numbers, booleans, and NULL are converted to native JSON types automatically.

SQL to JSON Converter

The SQL to JSON Converter is a free online developer tool that transforms SQL statements into clean, structured JSON format within seconds. Whether you're working with INSERT INTO, SELECT, CREATE TABLE, or UPDATE queries, this converter makes it easy to convert database records into JSON objects for APIs, web applications, testing, and data migration.

Our SQL to JSON Converter supports multiple SQL dialects including MySQL, PostgreSQL, SQLite, SQL Server, Oracle, and MariaDB. Simply paste your SQL query or upload a SQL file, choose your preferred output options, and generate valid JSON instantly. No software installation or registration is required.

Why Use an SQL to JSON Converter?

JSON has become the standard format for exchanging data between servers, applications, and APIs. While databases store information using SQL tables, most modern applications consume JSON. Instead of manually converting rows into JSON objects, this tool automates the entire process, saving time and reducing errors.

Developers frequently need JSON while building REST APIs, mobile applications, frontend dashboards, JavaScript applications, or importing sample data into testing environments. Our converter produces structured JSON that is easy to read, validate, and integrate into any workflow.

Supported SQL Statements

• INSERT INTO statements
• SELECT query results
• CREATE TABLE definitions
• UPDATE statement preview

Each statement type is parsed intelligently to generate meaningful JSON output while preserving data types wherever possible.

Supported Database Dialects

• MySQL
• PostgreSQL
• SQLite
• SQL Server
• Oracle Database
• MariaDB

The parser is designed to understand syntax variations between popular database engines, making it useful for developers working across multiple database platforms.

Key Features

• Free online SQL to JSON conversion
• Supports SQL file upload
• Paste SQL queries directly into the editor
• Pretty-print JSON output
• Sort JSON keys alphabetically
• Remove NULL values from generated JSON
• Convert SQL dates into ISO format
• Convert boolean-like values into true/false
• Convert numeric strings into numbers
• Escape Unicode characters when required
• Works entirely in your browser
• No registration required

How to Use

1. Select the SQL statement type.
2. Choose the appropriate SQL dialect.
3. Paste your SQL query or upload a .sql file.
4. Select optional JSON output settings.
5. Click Convert to JSON.
6. Copy or download the generated JSON.

Example Use Cases

• Convert SQL seed data into JSON fixtures.
• Generate mock API responses.
• Prepare JSON for frontend development.
• Migrate database content between systems.
• Create test datasets for automated testing.
• Transform SQL exports into JSON documents.
• Debug SQL query results.
• Build sample data for documentation.

Benefits of Using This Tool

Manual conversion from SQL to JSON can be tedious and error-prone, especially when working with large datasets. This tool automates the conversion process while preserving the structure of your data. The generated JSON is clean, readable, and compatible with modern programming languages such as JavaScript, Python, PHP, Java, C#, Go, and Node.js.

Because the converter runs directly in your browser, your SQL queries remain on your device, providing a faster and more private experience than many server-based converters.

Frequently Asked Questions(FAQ)