CSV to JSON — Free Online Tool
Turn CSV data into a JSON array of objects using the first row as headers.
About CSV to JSON Converter
The CSV to JSON Converter turns spreadsheet-style CSV data into a clean JSON array of objects right in your browser. It uses the first row as keys and builds one object per row, which is perfect for feeding spreadsheet exports into APIs, scripts, and config files.
A robust parser handles quoted fields, escaped quotes, and commas or newlines inside cells, so even complex CSV converts correctly. Everything runs locally, keeping your data private while producing neatly indented, ready-to-use JSON.
How to Use CSV to JSON Converter
- Paste your CSV data, including the header row, into the input box.
- Click 'Convert to JSON' to generate the JSON array.
- Review the indented JSON output and the row count.
- Use 'Copy Result' to copy the JSON to your clipboard.
Key Features
Uses the first CSV row as JSON object keys automatically
Correctly parses quoted fields, escaped quotes, and embedded commas
Outputs neatly indented, readable JSON arrays
100% client-side - your CSV never leaves your browser
Shows how many rows were converted
Frequently Asked Questions
How is the CSV converted to JSON?
The first row of your CSV is treated as the column headers. Each following row becomes a JSON object, mapping every header to the matching cell value, and all rows are combined into a JSON array.
Does it handle quoted fields and commas?
Yes. The parser correctly understands double-quoted fields, escaped quotes, and commas or line breaks inside quotes, so messy real-world CSV converts accurately.
Are values converted to numbers automatically?
No. All values are kept as strings to preserve data exactly as written, including leading zeros and codes. You can convert types later if your application needs them.
Is my CSV data sent to a server?
No. Conversion happens entirely in your browser. Your CSV never leaves your device, making it safe for private or sensitive datasets.