How do I convert CSV to JSON?

Click the CSV tab, paste your CSV data (including the header row), and click Convert to JSON. Each row becomes a JSON object with keys taken from the header row.

What JSON format is required for CSV conversion?

The tool expects a JSON array of objects where each object has the same keys. Example: [{"name":"Alice","score":95},{"name":"Bob","score":87}]. Objects with different keys may produce empty cells.

Can I open the downloaded CSV in Excel or Google Sheets?

Yes. The downloaded .csv file opens directly in Excel, Google Sheets, LibreOffice Calc, and Numbers. Use File → Import if double-clicking doesn't open it correctly.

JSON ↔ CSV Converter

Convert a JSON array to CSV for spreadsheets, or parse CSV data back to JSON

Runs locally in your browser🆓Free — no sign-up🔒100% Private

JSON and CSV are the two most common data interchange formats, but they represent data in fundamentally different ways. JSON supports nested objects, arrays, and mixed types within a hierarchical structure. CSV is flat tabular data with rows and columns — the format expected by Excel, Google Sheets, and most data import tools. Converting between them is necessary when processing API data in a spreadsheet, exporting database records for non-technical stakeholders, preparing data for machine learning pipelines, or importing spreadsheet data into a JavaScript application. This converter flattens JSON arrays of objects into tabular CSV with automatic column header detection, and converts CSV back to structured JSON arrays. A common scenario is pulling order data from an e-commerce API that returns a JSON array of order objects, then needing to hand that data to a business analyst who works exclusively in Excel. Another frequent use case is taking a product catalog maintained in Google Sheets and converting it to JSON so a front-end developer can load it directly into a React application without standing up a database. Data scientists also rely on this conversion regularly — Python libraries like pandas expect CSV input for quick exploration, but data collected from webhooks or REST endpoints almost always arrives as JSON. A third real-world case is migrating records between systems: exporting a CRM's contact list as JSON via API and converting it to CSV for bulk import into a new platform. Developers debugging API responses, data analysts bridging the gap between engineering and business teams, and no-code builders integrating third-party services will find this tool particularly useful in their day-to-day workflows. All conversion happens directly in your browser — your data is never uploaded to any server, which makes it safe to use with sensitive or proprietary datasets. Simply paste your JSON or CSV, click convert, and copy or download the result instantly.

JSON ↔ CSV Converter

JSON Input (array of objects)

How to use JSON ↔ CSV Converter

1.Use the json ↔ csv converter tool above — no sign-up or account required
2.All processing runs locally in your browser — your data is never sent to a server
3.Copy or download your results instantly and use them anywhere

Frequently Asked Questions about JSON ↔ CSV Converter

Paste your JSON array of objects (e.g. [{"name":"Alice","age":30}]) into the JSON tab above and click Convert to CSV. The output is a spreadsheet-compatible CSV with headers from the JSON keys.