Converters No uploads Runs in your browser

JSON to CSV

Use this JSON to CSV converter to transform JSON arrays and objects into spreadsheet-ready CSV. Flatten nested fields, preview columns, choose delimiters, and export data for Excel, Google Sheets, databases, and analysis workflows without uploading files.

Workspace

Use the tool below. Your inputs stay local when the tool supports browser-only processing.

All tools

JSON Input

Delimiter

Include headers

Last reviewed: 2026-08-26 · Testing methodology

Workflow

How to use the JSON to CSV

Paste JSON Data

Paste a JSON array or object into the JSON to CSV converter. The tool detects fields and prepares tabular rows from flat or nested structures.

Preview Columns

Review the detected columns, delimiter, and flattened nested keys before export. The JSON to CSV converter helps avoid missing fields in spreadsheet output.

Copy or Download CSV

Copy the CSV text or download it for Excel, Google Sheets, databases, or analysis workflows. Conversion happens in your browser with no upload.

How this tool works

The component parses the JSON array, collects column keys, escapes quotes and delimiters, and writes one CSV row per object.

Engine: Client-side JSON parsing and CSV escaping
Supported input: JSON arrays of objects
Output: CSV text and download

Input: [{"name":"Ada","role":"Engineer"}]
Output: name,role Ada,Engineer

Limits, edge cases, and troubleshooting

Use it for flat API exports and spreadsheet handoff. Normalize nested data and confirm column order before downloading.

The full JSON array is processed in browser memory.
Nested objects and arrays require flattening or become serialized values; inconsistent keys produce blank cells.

When to use another workflow

Use a data-frame or ETL tool for nested flattening, type schemas, large datasets, encoding control, and automated exports.

Option	Best for	Trade-off
This browser tool	Quick, private, one-off work	Limited by browser memory and the documented feature set
Desktop or command-line tool	Batch jobs and repeatable automation	Requires installation and setup

Verification

Reviewed by the Free Online Tools Nest Team on 2026-08-26. The interface, output path, and documented limitations were checked against the current implementation. See our testing methodology for the review process.

Read the testing methodology

JSON to CSV — Frequently Asked Questions

How does this JSON to CSV converter handle nested objects?

Nested objects are flattened with dot notation so values like user.name become CSV columns. Arrays can be represented as joined values or serialized strings depending on the structure.

Is this JSON to CSV converter private?

Yes. The JSON to CSV converter processes input locally in your browser, so private data exports and API responses do not leave your device.