JSON to SQL Converter
Turn a JSON array of objects into SQL INSERT statements with auto-quoting and NULL handling.
Convert JSON into SQL INSERT statements
The JSON to SQL Converter turns a JSON array of objects into ready-to-run SQL INSERT statements. Give it a table name and paste your JSON; it generates one INSERT per object, quoting strings, leaving numbers unquoted, mapping booleans to TRUE/FALSE, and turning missing values into NULL. Everything runs in your browser.
Why convert JSON to SQL?
APIs and modern apps speak JSON, but databases speak SQL. When you need to seed a table, migrate data, or load an API response into a database, converting JSON to INSERT statements by hand is slow and easy to get wrong. This tool does it instantly and escapes your data correctly.
How to use it
- Enter the target table name.
- Paste a JSON array of objects (or a single object).
- Copy the generated INSERT statements.
How values map to SQL
| JSON | SQL |
|---|---|
| "Alice" | 'Alice' |
| 30 | 30 |
| true / false | TRUE / FALSE |
| null / missing | NULL |
Mixed keys are handled
If your objects don't all share the same keys, the converter collects every key across the array and uses NULL for any object that's missing one. That means you get a consistent column list and valid INSERT statements even when the JSON is a little irregular — common with real-world API data.
Tips
- Validate your JSON first if the converter shows an error — a stray comma is the usual culprit.
- Make sure the object keys match your table's column names.
- Nested objects/arrays are stringified; flatten them first if you need separate columns.
Private and free
Your JSON is converted entirely in your browser — nothing is uploaded or stored. The tool is completely free with no limits.
Frequently asked questions
What JSON format does it accept?
A JSON array of objects (or a single object). Each object becomes one INSERT statement.
How are booleans and nulls handled?
Booleans become TRUE/FALSE, and null or missing values become NULL. Strings are quoted and escaped.
What if objects have different keys?
The tool collects all keys across the array and fills missing ones with NULL, so the output stays consistent.
Is my data private?
Yes. Conversion runs entirely in your browser and nothing is uploaded.