JSON to CSV Converter

Convert JSON to CSV and CSV to JSON online. Supports custom delimiters, nested objects, and file download. Free, client-side, no data sent to any server.

JSON to CSV conversion

JSON (JavaScript Object Notation) and CSV (Comma-Separated Values) are two of the most common data interchange formats. JSON is hierarchical and self-describing, making it ideal for APIs and configuration. CSV is flat and tabular, making it ideal for spreadsheets, databases, and data analysis tools like Excel, Google Sheets, and pandas.

When to convert JSON to CSV

  • Data analysis: Import API response data into Excel, Google Sheets, or pandas DataFrames.
  • Database import: Prepare data for bulk import into SQL databases.
  • Reporting: Convert structured data into a format stakeholders can open in spreadsheet software.
  • Data migration: Move data between systems that use different formats.

When to convert CSV to JSON

  • API integration: Convert spreadsheet data into JSON for API consumption.
  • Frontend rendering: Transform tabular data into objects for JavaScript frameworks.
  • Configuration: Convert flat data into structured configuration files.

Frequently Asked Questions

Is my data sent to a server? No. All conversion runs entirely in your browser using JavaScript. Nothing is uploaded.

What happens to fields with commas? Fields containing the delimiter character are automatically wrapped in double quotes, per the RFC 4180 CSV standard.