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ENGINE NATIVEACCEPTS JSON

JSON to CSV

NATIVETOOL 52 OF 190

Convert JSON to CSV Online — Free & Instant

Parse a JSON array and generate a downloadable CSV file with headers.

ENGINENATIVE
ACCEPTSJSON
MAX SIZENONE
UPLOADNEVER
01Paste your JSON array into the input area.
02Click Convert to CSV to process the data — no row limits.
03Copy or download the resulting CSV.

About JSON to CSV

Need to turn a JSON array into a spreadsheet? API responses, database exports, and analytics data often come as JSON arrays of objects, but spreadsheet tools like Excel and Google Sheets work with tabular CSV data. This tool bridges that gap by parsing your JSON array, extracting all unique keys as column headers, and generating a clean CSV file ready to open in any spreadsheet application. It handles nested objects by flattening them with dot notation, so a field like address.city becomes a single column. Arrays within objects are serialized cleanly. Download the resulting CSV file or copy it to your clipboard with one click. This is particularly useful for data analysts converting API data for reporting, developers exporting test data, and anyone who needs to review JSON data in a familiar spreadsheet format.

Questions

Is my data sent to a server?

No. All processing happens locally in your browser. No data leaves your device.

What JSON structure does this tool expect?

It expects a JSON array of objects, where each object represents a row. For example: [{"name": "Alice", "age": 30}, {"name": "Bob", "age": 25}]. Nested objects are flattened automatically.

How are nested objects handled?

Nested properties are flattened using dot notation. For example, {"address": {"city": "NYC"}} becomes a column named "address.city".

What if my objects have different keys?

The tool collects all unique keys across every object. Rows missing a key will have an empty value in that column.

Can I use the CSV in Excel?

Yes. The output is standard comma-separated CSV that opens directly in Excel, Google Sheets, LibreOffice Calc, and any other spreadsheet application.

Is my file uploaded to a server?

No. Transmute processes everything locally in your browser using JavaScript and WebAssembly. Your files never leave your device — there is no server, no upload, no cloud processing.

Related

CSV to JSONConvert CSV data to a JSON array of objects, with the header row supplying the keys. Paste your CSV, then copy or download the JSON in one click.CSV → JSONJSON FormatterFormat, validate, and minify JSON, with long numeric ids left byte for byte. Syntax errors report the exact line and column — good for API responses.TXT → JSONXML FormatterFormat, validate, and indent XML, or minify it back to one line. Malformed tags surface the parser's own message — handy for SOAP and config files.XML → XMLMarkdown to HTMLConvert Markdown to clean HTML with live side-by-side preview. Supports GFM tables, code blocks, task lists, and inline formatting.MD → HTML