JSON to CSV Converter

Convert JSON arrays into spreadsheet-ready CSV. Flatten nested objects, preview the result, and download your data.

JSON to CSV

Developer Tool

Transform structured JSON into CSV for spreadsheets, reporting, and data analysis.

Data rows

CSV records excluding headers

Columns

CSV header fields

Output size

CSV characters

Conversion workspace

Paste a JSON array containing objects into the editor.

JSON Input

input.json

JSON

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CSV Output

output.csv

CSV

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Conversion runs locally in your browser. No custom backend upload is used by this tool.

How conversion works

Each root-level JSON object becomes one CSV row.
Object properties become CSV column headers.
Nested objects use dotted headers, such as address.city.
Arrays and nested array values are serialized as JSON text inside a cell.
Missing properties become empty cells.
Commas, quotation marks, and newlines in values are escaped according to CSV quoting rules.

Supported input

Provide a JSON array of objects, for example:

[
  { "name": "Alex", "age": 25 },
  { "name": "Sam", "age": 30 }
]

A single JSON object or an array of primitive values is not accepted. Potential spreadsheet formulas in text cells are prefixed with an apostrophe as a practical safety measure.

What is a JSON to CSV Converter?

JSON to CSV conversion transforms a structured array of JSON objects into comma-separated values. CSV files can be opened in spreadsheet applications or imported into many data-analysis workflows.

Is my data uploaded?

The conversion logic runs in your browser and does not send the JSON to a custom backend API. Your browser, installed extensions, and the surrounding website environment may still affect privacy.