JSON to CSV Converter – Convert JSON to CSV Online Free
About the JSON to CSV Converter
The JSON to CSV Converter transforms JSON data into a clean, spreadsheet-ready CSV or Excel file. Paste your JSON directly, load it from a file, or fetch it from a live API URL, and the tool automatically detects the data array, flattens nested objects, and generates properly formatted rows and columns ready to download.
This tool is built for developers, analysts, and marketers who regularly pull data from APIs or JSON exports and need it in a spreadsheet for reporting or analysis. If you’re comparing two API responses before converting, use the Text Diff Checker to spot what changed between them. And if you’re cleaning up matching URL lists pulled from the same data source, pair this with the Remove Duplicate Lines tool to deduplicate entries before or after conversion.
We tested this converter with different JSON files, including nested objects and API responses, to make sure the exported CSV keeps the data complete and properly organized.
How to Use the JSON to CSV Converter
- Paste your JSON into the JSON Input box, or load it from a file or a live URL.
- Click Format JSON to auto-indent and validate your input before converting.
- Set the JSON Variable Name if your data is nested under a specific key (optional — auto-detected by default).
- Choose an Output Field Separator: comma, semicolon, colon, bar, tab, or a custom character.
- Enable options like Include header row, Suppress line breaks, or Force wrap values in quotes as needed.
- Click Convert to CSV to generate the output.
- Click Copy CSV, Download CSV, or Download Excel to save your file.
Example Usage
Input:
{"employees": [{"id": 1, "name": "John"}, {"id": 2, "name": "Jane"}]}
Output (CSV):
id,name 1,John 2,Jane
The tool automatically detects the “employees” array and converts each object into a row, using the object keys as column headers. If you need to convert the spreadsheet back into JSON later, our CSV to JSON Converter makes it just as easy.
Frequently Asked Questions
Yes, nested objects are automatically flattened into dot-notation columns (e.g. “address.city”), while nested arrays are converted to a JSON string within a single cell.
Yes, enter the API URL in the “Fetch from URL” field and click “Fetch URL.” Note that the source API must allow CORS requests for the fetch to succeed.
The tool collects all unique keys across every object to build the header row, leaving a blank cell for any object missing that particular field.
Both contain the same data. The CSV download is a plain comma/character-separated file, while the Excel download is formatted as an .xls file that opens directly with column structure in Excel.
Yes, this tool is completely free with no signup required.
