CSV to JSON Converter

Convert CSV spreadsheet data to JSON arrays instantly. The first row is used as object keys, and values are automatically typed as numbers, booleans, or strings. Perfect for importing spreadsheet data into APIs or JavaScript applications.

How It Works

Paste CSV data with headers in the left editor
JSON array output appears in the right panel
Numbers and booleans are auto-detected
Download as a .json file or copy to clipboard

Frequently Asked Questions

How does type detection work?

The converter automatically detects numbers (42, 3.14), booleans (true, false), and null values in your CSV. Everything else is treated as a string.

Does the first row need to be headers?

Yes. The first row of your CSV is used as the object keys in the JSON output. Each subsequent row becomes a JSON object.

Can I paste data from Excel?

Yes. Copy cells from Excel or Google Sheets and paste directly into the editor. Tab-separated values from spreadsheets are automatically handled.