JSON to CSV Converter

How to use

How to use JSON to CSV Converter

01
Paste or upload
Add your JSON (or CSV) data.
02
Pick a direction
Choose JSON→CSV or CSV→JSON.
03
Convert
Nested objects are flattened into clean columns automatically.
04
Download
Save an Excel-ready CSV or a formatted JSON file.

Use cases

Common use cases

—An analyst turns an API's JSON into a spreadsheet.
—A developer converts CSV export data back into JSON.
—A marketer opens JSON data in Excel for reporting.
—A data owner flattens nested records for a database import.

Overview

Convert between JSON and CSV in one click

Paste JSON to get clean CSV, or paste CSV to get structured JSON, with the tool handling nested fields and headers so you don't have to reformat data by hand. It's the fastest way to move data between APIs, spreadsheets, and databases.

Built for real-world data wrangling

Developers and analysts constantly bridge the gap between JSON from APIs and CSV for spreadsheets — this converter removes the tedious, error-prone manual step. Everything is processed locally in your browser, so even sensitive datasets never leave your machine.

Features

01: Live bidirectional JSON ↔ CSV conversion
02: Flattens nested objects & arrays (dot/index columns)
03: Unions all keys so no columns are dropped
04: Comma, semicolon, tab or pipe delimiters
05: Type inference on CSV → JSON (numbers, booleans, null)
06: Proper quoted-field CSV parser + row/column stats
07: Upload, copy & Excel-ready downloads — runs locally

FAQ

Frequently asked questions

How do I convert JSON to CSV online for free?+

Paste your JSON array or upload your JSON file. The tool flattens it into a CSV format and lets you download the Excel-compatible CSV file instantly — no signup required.

Can it handle nested JSON objects?+

Yes. The converter automatically flattens nested objects using dot notation (e.g., user.name becomes a column header). Arrays within objects are handled based on your configuration.

Why convert JSON to CSV?+

CSV files open in Excel and Google Sheets for easy data analysis, filtering, and charting. JSON is great for APIs, but CSV is better for non-technical users, data reports, and bulk imports into systems like Salesforce or HubSpot.

Can I convert a large JSON file with thousands of rows?+

Yes. The tool processes data locally in your browser and can handle large JSON arrays efficiently. For very large files (100MB+), performance depends on your device's memory.

Does the CSV work directly in Excel?+

Yes. The CSV is UTF-8 encoded with proper comma separation, making it compatible with Excel, Google Sheets, LibreOffice Calc, and any other spreadsheet application.

Can I convert CSV back to JSON?+

Yes. The converter is bidirectional — switch to CSV→JSON mode, paste your CSV data, and it generates a JSON array where each row becomes an object with column headers as keys. Useful for importing spreadsheet data back into APIs or JavaScript applications.

How to use JSON to CSV Converter

Paste or upload

Pick a direction

Convert

Download

Common use cases

Convert between JSON and CSV in one click

Built for real-world data wrangling

Frequently asked questions

From the journal

Best AI Writing Assistants for Content Teams in 2025

How to Choose the Right AI Image Generator

Top 10 Free AI Tools You Can Start Using Today