Free JSON to CSV Converter: No upload, no limits

CSV table

Your table appears here as you paste.Nested fields become columns like serp.position

About this json to csv converter

Convert JSON to CSV instantly, paste your JSON array or object and our free JSON to CSV converter returns a clean CSV file ready for Excel, Google Sheets, Screaming Frog or any data tool. We auto-flatten nested objects using dot notation, preserve UTF-8 characters and handle files up to 5MB without breaking a sweat.

No upload, no signup, no data stored, the conversion runs in your browser session and the JSON to CSV output downloads as a normal .csv. Built for SEO teams exporting DataForSEO, GSC and crawl data, but usable for any JSON to CSV job.

How to use JSON to CSV Converter

  1. 1

    Paste JSON Data

    Input your JSON array or object directly into the code editor.

  2. 2

    Validate Structure

    Our tool checks for valid JSON syntax before starting the conversion.

  3. 3

    Convert to CSV

    Instantly transform your data into a flat CSV format suitable for Excel.

  4. 4

    Download File

    Download your processed data as a .csv file ready for analysis.

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Frequently asked questions

What is the maximum file size?

Our online tool handles JSON files up to 5MB smoothly. For larger datasets, we recommend splitting the data or using a desktop-based converter.

Is my data secure?

Yes. The conversion runs entirely in your browser. Your JSON is never uploaded to our servers.

Can it handle nested JSON objects?

Yes. Nested objects become their own columns using dot notation, for example serp.position, so nothing turns into [object Object].

Why is CSV better for SEO analysis?

CSVs are the standard for data analysis tools like Google Sheets or Screaming Frog, making it easier to filter, sort, and process large amounts of SEO data.

Does the tool support UTF-8 encoding?

Yes, the generated CSV file uses UTF-8 encoding, ensuring that all special characters and non-English text are preserved correctly.

Where does the JSON come from if it is wrapped in an object?

If your JSON is an object with a list inside, such as {"data": {"items": [...]}}, the converter finds the largest list of records automatically and tells you which path it used.

What happens to arrays inside a record?

Lists of simple values like tags are joined with semicolons in one cell. Lists of objects are kept as JSON text in the cell so no data is lost.

Do I need to click a convert button?

No. The table updates as you paste or type, and you can copy the CSV or download it as a file at any time.

Will the CSV open correctly in Excel?

Yes. Cells with commas, quotes or line breaks are quoted properly. Cells that start with = or + are made safe so Excel does not run them as formulas.

Can I convert a single JSON object?

Yes. A single object becomes one row, and the preview shows it as a list of fields so it is easy to read.

How do I convert JSON to CSV?

Paste your JSON or upload a .json file above. The converter turns each record into a row and each key into a column, flattens nested fields, and lets you copy the CSV or download it. It runs in your browser.

How do I open a JSON file in Excel?

Convert it to CSV first with this tool, then open the CSV in Excel or Google Sheets. Each JSON record becomes a row, so you can sort, filter and chart the data straight away.