JSON To CSV Converter Online
Convert JSON arrays to CSV with custom column ordering. Handles nested objects with dot notation flattening.
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About JSON to CSV Converter Online
Convert JSON arrays to CSV format with auto-detected headers. Handles nested objects via dot-notation flattening (e.g., address.city becomes a column). Supports custom delimiter and column ordering. Download result as .csv file.
Converting JSON arrays to CSV is common when moving API data into a spreadsheet, but it isn't always a clean, direct mapping — JSON supports nested objects and arrays within a single record, while CSV is strictly flat rows and columns, so nested fields have to be flattened using dot-notation column headers (like address.city) to represent the same data in a spreadsheet-compatible format without losing structure. This comes up regularly for anyone exporting API responses for analysis in Excel or Google Sheets, or preparing JSON data for tools that only accept CSV input. This tool auto-detects headers from your JSON structure and correctly flattens nested objects, handling the conversion logic so you don't have to write a script for a one-off export.
How to use
- Paste or type your input directly into the editor — output updates in real time as you work.
- Check the error/status indicator if your input is invalid; it points to the exact line or issue where relevant.
- Use the copy or download button to grab the processed output once it looks right.
- Chain into a related tool below if your workflow needs a second processing step.
- Processing happens entirely client-side in your browser — nothing you paste is uploaded to a server.
Tool details
⚡ Next step — complete your workflow
Frequently asked questions
Does it handle nested JSON objects?
Yes. Nested objects are flattened using dot notation. { "address": { "city": "Delhi" } } becomes column "address.city".
What if JSON keys differ across array items?
All unique keys across all objects are used as columns. Missing values become empty cells.
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