When to Convert JSON to CSV
JSON-to-CSV conversion is needed whenever structured API or application data must be consumed by non-technical users or imported into systems that expect tabular data.
- Sharing API data with business teams who work in Excel or Google Sheets
- Importing data into databases that accept CSV but not JSON
- Creating reports from API responses for management review
- Exporting application data for analysis in spreadsheet tools
- Migrating data between systems with different format requirements
How Nested Object Flattening Works
JSON's nested structure does not map directly to CSV's flat table format. Our tool resolves this by recursively flattening nested objects, creating column headers that represent the full path to each value using dot notation.
- {"user": {"name": "John"}} → column header "user.name" with value "John"
- {"address": {"city": "NYC", "zip": "10001"}} → columns "address.city" and "address.zip"
- Arrays within objects → serialized as JSON strings in the CSV cell
- Missing keys across objects → empty cells in the corresponding columns
Deeply nested objects are fully flattened regardless of nesting depth. The column header always represents the complete path (e.g., "company.address.street.name").
Step-by-Step Conversion
Converting JSON to CSV takes just seconds with our tool.
- Step 1: Paste your JSON array or upload a .json file
- Step 2: The tool parses the JSON and flattens nested objects
- Step 3: Preview the CSV output with properly aligned columns
- Step 4: Download the .csv file or copy the CSV text to clipboard
The input must be a JSON array of objects (e.g., [{...}, {...}, ...]). If your data is a single object, wrap it in an array: [your_object].
CSV Standards Compliance
The generated CSV follows RFC 4180 standards, ensuring maximum compatibility with spreadsheet applications and data import tools. Fields containing commas are wrapped in double quotes. Fields containing double quotes have their quotes escaped by doubling them. Line endings are consistent. Header rows are included by default. This standards compliance means the CSV opens correctly in Excel, Google Sheets, LibreOffice, and any other compliant application without manual formatting.
Share API Data with Anyone
Our JSON to CSV converter makes it easy to transform developer-friendly JSON into business-friendly spreadsheets. With automatic nested object flattening, standards-compliant CSV output, and complete browser-based privacy, convert your JSON data in seconds. Try it now — paste any JSON array and download a perfectly formatted CSV file.