JSON ↔ CSV

Convert data between JSON and CSV formats.

Runs in your browser — your data never leaves your device

JSON

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CSV

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ToolDock's JSON to CSV converter lets you switch between tabular JSON arrays and comma-separated values without writing a single line of code, so you can move data between APIs and spreadsheets in seconds.

How to Convert JSON to CSV

Paste or upload your JSON data in the input panel. If you're converting from JSON to CSV, the input must be an array of objects where each object shares the same keys. The tool automatically extracts the keys as column headers and maps each object's values to a row.

Select the conversion direction (JSON to CSV or CSV to JSON).
Enter, paste, or upload your data in the input panel.
The converted output appears instantly in the output panel.
Copy the result to your clipboard or download it as a file.

About CSV

CSV (Comma-Separated Values) is a delimited text file format that uses a comma to separate values. Each line of the file is a data record. Each record consists of one or more fields, separated by commas. The use of the comma as a field separator is the source of the name for this file format. It's a common format for data exchange between different applications, especially spreadsheets and databases.

When to Use JSON vs CSV

Both JSON and CSV are widely used for storing and exchanging data, but each format excels in different scenarios.

Choose JSON when:

Data has nested objects or arrays
You need to preserve data types (numbers, booleans)
You're working with REST APIs or web services
Configuration files need human readability

Choose CSV when:

Data is flat and tabular (rows and columns)
You need to import into spreadsheet applications
File size matters (CSV is typically smaller)
Non-technical stakeholders need to read the data

Frequently Asked Questions

What is a JSON to CSV converter?

A JSON to CSV converter transforms structured JSON data into Comma-Separated Values format, making it easy to open and analyze data in spreadsheet applications like Excel or Google Sheets.

How do I convert JSON to CSV?

Paste your JSON array into the input field, and the tool automatically detects the structure and generates a CSV with headers derived from the JSON keys. You can then copy or download the result.

Can I convert CSV back to JSON?

Yes. The tool supports bidirectional conversion. Switch to the CSV-to-JSON tab, paste your CSV data, and the tool outputs properly formatted JSON.

What JSON formats are supported?

The tool handles arrays of objects (the most common format), nested objects (which get flattened with dot notation), and single objects. Ensure your JSON is valid before converting.

Is this converter free?

Yes, ToolDock's JSON-CSV converter is completely free, requires no signup, and runs entirely in your browser.

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API Usage

How to Convert JSON to CSV

About CSV

When to Use JSON vs CSV

Choose JSON when:

Choose CSV when:

Frequently Asked Questions

What is a JSON to CSV converter?

How do I convert JSON to CSV?

Can I convert CSV back to JSON?

What JSON formats are supported?

Is this converter free?

Related Tools

API Usage

How to Convert JSON to CSV

About CSV

When to Use JSON vs CSV

Choose JSON when:

Choose CSV when: