JSON to CSV Converter Online

Convert JSON to CSV format. Fast, secure, and completely free. All processing happens in your browser — no data is sent to any server.

What is JSON to CSV?

JSON to CSV conversion takes an array of JSON objects and flattens it into tabular rows, using the union of all object keys as the CSV header row — a necessary step since CSV has no concept of nested structure the way JSON does, so this tool needs to make consistent decisions about how nested objects or arrays within your JSON get represented as flat cell values (commonly by flattening nested keys with a separator, or serializing them as a JSON string within a single cell).

How to Use JSON to CSV

1. Paste a JSON array of objects into the input panel
2. Click 'Convert' to produce CSV output with a header row derived from the object keys
3. Review how nested fields were flattened into columns
4. Choose your delimiter (comma, semicolon, tab) to match your target spreadsheet application's expectations
5. Copy or download the resulting CSV file

Key Features

• Converts a JSON array of objects into a properly formatted CSV table
• Automatically derives header columns from the union of all object keys
• Configurable flattening strategy for nested objects and arrays
• Supports comma, semicolon, or tab delimiters
• Correctly quotes and escapes values containing commas or quotes

Why Use JSON to CSV?

Sharing data with someone who works in a spreadsheet, or importing structured data into a tool that only accepts CSV, means converting your JSON array into tabular form — and getting that conversion right (correct header derivation, proper quoting of values with embedded commas, sensible handling of missing fields across objects) is more work than it first appears if you write it yourself. This tool handles those edge cases so the resulting CSV opens cleanly in Excel, Google Sheets, or any CSV-consuming tool.

Common Use Cases

• Exporting API response data as a CSV file for a non-technical stakeholder
• Converting a JSON array of records into a spreadsheet for analysis
• Preparing JSON test data for import into a system that only accepts CSV
• Generating a downloadable CSV report from a JSON-based data source
• Sharing structured data with a team member who prefers working in Excel

Frequently Asked Questions

What happens if my JSON objects don't all have the same fields?

The header row includes the union of all fields found across every object, and any object missing a given field simply has an empty cell in that column for its row.

How does the conversion handle a field that's a nested object or array, like an address or a list of tags?

They're typically flattened using a naming convention (like address.city as a column name) or serialized as a JSON string within a single cell, depending on the conversion settings you choose.

Will values containing commas or quotes break the CSV format?

No, any value containing a comma, quote, or line break is automatically wrapped in quotes and properly escaped so the resulting CSV parses correctly in any spreadsheet application.

Can I choose a different delimiter, like semicolon, for regional spreadsheet settings?

Yes, delimiter selection lets you produce CSV compatible with spreadsheet applications configured for regions that use semicolons as the default list separator.

Is my JSON data uploaded anywhere during conversion?

No, the conversion runs entirely in your browser using JavaScript.

Guides

• CSV Format: A Complete Guide for Developers

Related Tools

• CSV to JSON — Convert CSV to JSON format
• JSON Formatter — Format, beautify and validate JSON data
• JSON to XML — Convert JSON to XML format