Convert SQL to JSON Online Free (no login)

Quickly transform SQL query results, INSERT statements, or table exports into clean, structured JSON with no setup required. Just paste your SQL data, click Convert, and get valid JSON you can copy or download instantly. Everything runs in your browser — nothing is ever sent to a server.

How to Convert SQL to JSON

1. Paste your SQL data — Copy your SQL query results, SELECT output, or INSERT statements into the input box.
2. Choose your input format — Select whether you're pasting a SELECT result (tab- or comma-separated rows), raw INSERT statements, or a CREATE TABLE + INSERT combo.
3. Click "Convert to JSON" — The tool parses your SQL data and generates a JSON array of objects.
4. Review the output — Inspect the formatted JSON in the output panel. Column names become object keys automatically.
5. Copy or download — Use the "Copy JSON" button or download the result as a .json file.

Why Use Flipper File to Convert SQL to JSON?

• Fully client-side — Your SQL data never leaves your browser. Nothing is uploaded to any server, ever.
• Multiple input formats — Handles SELECT output rows (with headers), INSERT INTO statements, and mixed SQL blocks.
• Clean, readable JSON — Output is pretty-printed with proper indentation by default, with a minify toggle.
• Handles NULLs and types — SQL NULL becomes JSON null; numeric strings are kept as numbers where appropriate.
• Copy and download in one click — Grab the JSON for your clipboard or download it as a file immediately.
• Free, no account needed — No sign-up, no email, no limits. Use it as often as you need.

Frequently Asked Questions

What SQL formats does this tool support?

The tool supports three common formats: (1) tab-separated or comma-separated SELECT result rows with a header row, (2) SQL INSERT INTO statements with column lists, and (3) combined CREATE TABLE + INSERT blocks. Paste whichever you have and the tool will detect the format automatically.

Does my SQL data get sent to a server?

No. All processing happens entirely in your browser using JavaScript. Your SQL data is never uploaded, logged, or stored anywhere. It's completely private.

Can I convert a whole table to JSON?

Yes. If you export a table as INSERT statements (which most SQL clients support), you can paste all the INSERT rows and the tool will produce a JSON array with one object per row.

What happens to NULL values?

SQL NULL values are correctly converted to JSON null. This preserves the semantic meaning of missing or undefined fields in your data.

Will numbers stay as numbers in the JSON output?

Yes. The tool attempts to preserve numeric types. Values that look like integers or decimals in your SQL output will be output as JSON numbers rather than strings, unless they are quoted in the original SQL.

Can I minify the JSON output?

Yes. By default the JSON is pretty-printed for readability. There's a toggle to switch to compact (minified) output, which is useful if you're pasting the JSON into code.

What if my SQL has extra whitespace or inconsistent formatting?

The parser normalizes whitespace and handles common inconsistencies from different SQL clients (MySQL, PostgreSQL, SQLite, MSSQL). If you encounter a format that doesn't parse correctly, try cleaning up the column header line first.

Is there a file size limit?

There is no enforced limit — the tool runs entirely in your browser so it's constrained only by your device's memory. In practice, SQL exports up to a few hundred thousand rows convert quickly with no issues.