Paste your JSON data below and get clean, formatted CSV in seconds. Everything runs in your browser — your data never leaves your device.
Drop JSON file here
Your CSV output will appear here...Paste JSON data to see CSV output
Three simple steps to convert your data.
Drop a JSON file or paste your data directly into the input area.
Choose delimiter, headers, and whether to flatten nested objects.
Copy the CSV to your clipboard or download it as a file.
JSON (JavaScript Object Notation) is a lightweight data interchange format widely used in web APIs and configuration files. CSV (Comma-Separated Values) is a plain-text format for tabular data, commonly used in spreadsheets and databases.
Converting JSON to CSV transforms each object in your JSON array into a row, with property names becoming column headers. This is essential for importing API data into Excel, Google Sheets, or other spreadsheet applications.
Nested object flattening
Automatically flattens nested objects into separate columns.
Client-side processing
Your data never leaves your browser. No uploads, no servers.
Custom delimiters
Choose comma, semicolon, tab, or pipe as delimiter.
Multiple input formats
Supports arrays, keyed objects, and single objects.
We support three formats: Array of objects (standard JSON array), Keyed object (objects keyed by a string), and Single object. The converter automatically detects the format.
When enabled, nested objects are flattened into separate columns using dot notation. For example, {"address": {"city": "NYC"}} becomes an address.city column.
No. All conversion happens entirely in your browser using JavaScript. Your data is never sent to any server. You can verify this by disconnecting from the internet and using the tool offline.
All processing happens in your browser. Your data never leaves your device.