Convert JSON to CSV Easily – A Complete Guide for Developers

Why convert JSON to CSV?

CSV (Comma-Separated Values) is a simple tabular format supported by Excel, Google Sheets and almost every BI tool. When you receive JSON from an API but need to analyse it in a spreadsheet, converting JSON to CSV is the easiest workflow.

• Business users understand rows and columns.
• CSV is compatible with spreadsheets and BI dashboards.
• JSON can be complex to analyse directly without tooling.

Flat JSON vs nested JSON

Before converting, it helps to understand the shape of your JSON.

• Flat JSON – each object has only simple key–value pairs.
• Nested JSON – objects contain other objects or arrays.

[
  { "id": 1, "name": "Avi", "country": "IN" },
  { "id": 2, "name": "Kriti", "country": "US" }
]

The above is flat JSON – perfect for CSV. Each property becomes a column.

How JSONViewerTool converts JSON to CSV

JSONViewerTool.com has a dedicated JSON → CSV Converter page that handles common cases automatically.

1. Go to JSON → CSV Converter.
2. Paste or upload your JSON on the left side.
3. Click Convert JSON → CSV.
4. View the generated CSV table on the right.
5. Copy the CSV or download it as a .csv file.

Handling nested objects and arrays

Nested objects and arrays need to be flattened to fit neatly into rows and columns. There are several strategies:

• Use dot notation for nested keys (e.g. address.city).
• Join arrays into a comma-separated string.
• Explode arrays into multiple rows when each item is its own record.

Tips for clean CSV output

• Validate your JSON before converting.
• Ensure consistent keys across all objects.
• Remove irrelevant or extremely nested fields.

Next steps

Ready to try it? Open the JSON → CSV Converter, paste some real API JSON, and export it to a CSV file for analysis. If you ever need to go in the opposite direction, use the CSV → JSON Converter.