Convert JSON Data to CSV Spreadsheets Online
Convert JSON arrays and nested JSON objects into CSV files online. Export API data, database exports, and JSON payloads into downloadable CSV spreadsheets with custom delimiters, automatic header extraction, and tabular data preview directly inside your browser. Need native Excel binary spreadsheets? Use our JSON to Excel Converter. Need to flatten nested key paths into dot notation? Use JSON Flattener. Need YAML format instead? Try JSON to YAML Converter.
How to Convert JSON to CSV Online
- Paste JSON Input: Enter a JSON array of objects or single object into the input editor.
- Choose Column Delimiter: Select Comma (
,), Tab (\t), Semicolon (;), or Pipe (|). - Toggle Flattening: Check Flatten Nested Objects to extract sub-properties as dot-notation headers.
- Download CSV: Click Copy CSV or Download .csv to export your tabular file.
JSON Structure vs CSV Tabular Data Representation
| JSON Feature | CSV Equivalent | Transformation Note |
|---|---|---|
| JSON Array of Objects | Table Rows | Each array item becomes one CSV row |
| Object Keys | Column Headers | Unique object keys form header row |
| Nested Object | Dot Notation Column | e.g. user.address.city header |
| Array Values | Escaped JSON String | e.g. "["tag1", "tag2"]" inside quotes |
| Null / Missing Key | Empty Cell ("") | Missing properties render as empty values |
Key Features & Capabilities
- Custom Column Delimiters: Supports comma, tab, semicolon, and pipe delimiters.
- Automatic Header Extraction: Scans all array objects to compile a complete list of unique column headers.
- Nested Object Flattening: Flattens child objects into clean, readable dot-notation columns.
- Tabular Data Preview: Live interactive HTML table preview of your converted spreadsheet data.
- Private Browser Processing: Your JSON input is processed locally in your browser and isn't uploaded to TinyTools for conversion.
Related JSON Tools
- JSON to Excel – Export JSON data into native Microsoft Excel (.xlsx) files.
- JSON Flattener – Flatten nested JSON objects into dot-notation pairs.
- JSON Formatter & Validator – Prettify and repair JSON syntax errors.
- JSON to YAML – Convert JSON payloads into YAML markup.