JSON to CSV Converter
Convert JSON data into structured CSV or TSV tables.
Free Online JSON to CSV Converter
The JSON to CSV Converter is an industry-grade browser utility that transforms JSON payloads, API responses, and database dumps into standard comma-separated values (CSV) or tab-separated values (TSV) in real time. Built for data scientists, developers, and spreadsheet power users, it automatically flattens deeply nested object structures into dot-notation columns, allowing effortless importing into Microsoft Excel, Google Sheets, PostgreSQL, and BigQuery. Everything runs strictly in-memory on your machine, ensuring complete data privacy and security.
1. How to Convert JSON to CSV
Transform your data in three simple steps:
- Paste your JSON array or object into the left input editor, load from file, or click 'Sample'.
- Choose your preferred delimiter (Comma, Semicolon, or Tab).
- Click 'JSON → CSV' to generate RFC 4180 compliant CSV output.
- Copy to your clipboard or download the generated .csv file directly.
2. Key Features
2.1 Intelligent Nested Object Flattening
Complex hierarchical structures like { user: { profile: { name: 'Jane' } } } are cleanly unnested into clear column headers like 'user.profile.name'.
2.2 Custom Delimiters (CSV / TSV)
Toggle between standard comma (,), European semicolon (;), or tab characters (\t / TSV) depending on your spreadsheet or database locale.
2.3 Interactive Visualizer & Inspector
Switch between Text, Tree, and Table view modes on your source JSON to inspect and filter your data before export.
3. Practical Applications & Target Audience
Converting JSON to tabular formats is a daily necessity across data, business, and software teams:
- Data Analysts & Scientists: Converting REST API payloads into clean CSV datasets for Pandas, Python, and R analysis
- Product Managers & Marketers: Exporting application user analytics and event logs for analysis in Microsoft Excel or Google Sheets
- Database Administrators: Preparing bulk INSERT staging files for relational databases (PostgreSQL, MySQL, SQLite)
- Full-Stack Developers: Providing one-off report exports and customer-facing data extracts
4. Frequently Asked Questions (FAQ)
4.1 How does the tool handle nested JSON objects and arrays?
The converter flattens nested objects using dot-notation column headers (e.g., address.city). For arrays of primitives, values are joined with a clean delimiter. For arrays of objects, each item is represented as a structured row.
4.2 Can I generate Tab-Separated Values (TSV)?
Yes. Select 'Tab' as your delimiter option in the toolbar to export tab-separated records compatible with copy-pasting directly into spreadsheet cells.
4.3 Does this tool adhere to the RFC 4180 CSV standard?
Yes. Output follows RFC 4180 specifications, properly escaping values containing commas, line breaks, or double quotes with standard enclosing quote marks.
4.4 Are my JSON datasets saved or uploaded to remote servers?
No. The entire flattening and serialization algorithm executes locally inside your browser memory. Your confidential business and user data never touches an external server.
5. Useful Related Tools
- CSV to JSON Converter – Convert tabular CSV files back into structured JSON.
- JSON Formatter – Prettify, sort, and inspect JSON payloads.
- JSON Validator – Detect RFC 8259 syntax errors and auto-fix formatting issues.