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JSON to CSV Converter

Turn an array of JSON objects into a downloadable CSV table.

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DATA & CODE WORKSPACE

JSON to CSV Converter

Convert or format text locally in your browser. No file is uploaded to a ToolMosaic server.

Private by design

Values remain text. For downloadable CSV files, do not open data from untrusted sources in a spreadsheet without reviewing cells that begin with spreadsheet formula characters.

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About the JSON to CSV Converter

Transform a JSON array of records into a CSV or TSV file you can open in spreadsheets or import into reporting tools.

Formula or method

All keys across JSON objects become column headers. Each record becomes one row. CSV quotation rules are used for commas, embedded quotes and line breaks.

Worked example

An array containing two records with name and price fields becomes a table headed name,price, followed by one row for each object.

How to use the tool

Start with the example values above, then replace each input with your own figures. The results update immediately. Review the units, denominators, and assumptions before using any number in an important decision.

Assumptions and limitations

Use a top-level array of objects. Nested values are serialized as JSON text inside cells. CSV files opened in spreadsheet software may execute formulas beginning with special characters; review untrusted data before importing.

Frequently asked questions

Will every nested JSON field become a column?

No. The tool creates columns for top-level keys. Nested objects and arrays are preserved as JSON-formatted strings within cells.

Privacy and support

Your inputs are processed locally in your browser. ToolMosaic does not upload or store the values you enter in this tool. Our tools are free, and we appreciate your support.