📊 CSV to JSON Converter
Convert between CSV and JSON formats instantly. Perfect for data transformation, API development, and spreadsheet processing.
📊 CSV to JSON
📄 JSON to CSV
📖 How to Use
- CSV to JSON: Paste CSV data, select options, and convert to JSON format
- JSON to CSV: Paste JSON array, and convert to CSV spreadsheet format
- Custom Delimiters: Support for comma, semicolon, tab, and pipe delimiters
- Headers: Automatically detect and use first row as headers
- Download: Save converted data as .json or .csv files
- Client-Side: All processing happens in your browser - secure and fast
🎯 When to Use It
- Preparing spreadsheet data for an API or a JavaScript app.
- Turning JSON from an API into a CSV for Excel or Google Sheets.
- Converting tab or semicolon exports into a standard format.
💡 Tips & Common Pitfalls
- European spreadsheet exports often use semicolons, so if everything lands in one column, switch the delimiter.
- Quote any CSV value that contains the delimiter or a line break.
- For JSON to CSV, use an array of flat objects. Nested objects may not convert cleanly.
- Check the first row setting, because a missing header row produces wrong keys.
❓ Frequently Asked Questions
What is CSV format?
CSV (Comma-Separated Values) is a simple text format for storing tabular data. Each line represents a row, and commas separate values within rows.
What is JSON format?
JSON (JavaScript Object Notation) is a lightweight data format that's easy for humans to read and write, and easy for machines to parse and generate.
Is my data secure?
Yes! All conversions happen in your browser. Your data never leaves your computer or gets sent to any server.
Can I convert large files?
Yes, the tool can handle large datasets. However, very large files (100MB+) may slow down your browser.