Data Tools • Sep 24, 2026 • 3 min read
How to Convert Excel or CSV to JSON and SQL (With Examples)
Developers often receive data as a spreadsheet but need JSON for an app or SQL for a database. Converting by hand is slow and error-prone, so here is a faster way.
What the conversion does
The first row becomes your field names and each following row becomes a record. A sheet with columns name and city turns into a JSON array of objects like {"name":"Asha","city":"Lucknow"}, or into SQL INSERT statements for a table.
Steps
- Open the Excel/CSV to JSON & SQL converter.
- Upload your XLSX or CSV file.
- Choose JSON or SQL output.
- Review the preview.
- Copy or download the result.
Prepare your sheet first
- Use one header row with short, unique column names.
- Avoid merged cells and blank rows.
- Keep dates in one consistent format.
JSON or SQL?
Choose JSON for APIs, front-end apps and configuration. Choose SQL when you want to load rows directly into MySQL, PostgreSQL or SQLite. Always test imports on a copy of your database first.
Ready to try it?
Use the free Excel/CSV to JSON & SQL. No sign-up, and your files stay in your browser.
Frequently asked questions
Can I convert an XLSX file directly?
Yes. Both Excel and CSV files are supported.
Is my spreadsheet uploaded?
No. Conversion happens locally in your browser.
Why is my output missing data?
Check for merged cells, empty header cells or extra blank rows in the source sheet.