JSON to CSV Converter
Convert Web API JSON to CSV for Excel.
▶About this tool
This tool converts JSON and CSV in one click. Three features: 1) JSON array to CSV, CSV to JSON, 2) Nested objects flattened with keys as headers, 3) All processing in browser—no data sent to server. Ideal for analyzing API response in Excel.
Tool interface
Usage
- Paste JSON array and click Convert to CSV
- Or paste CSV and click Convert to JSON
- Copy result to open in Excel or use in data
When to use
API response to Excel, data export/import.
Examples
[{"name":"A","age":20}] → name,age\nA,20
FAQ
JSON vs CSV?
JSON = hierarchical. CSV = tabular. APIs use JSON, Excel uses CSV. This tool converts both ways.
Nested JSON?
Flattened with combined keys (e.g. user.name) as headers.
How to convert JSON to CSV?
Paste JSON array, click Convert to CSV. Keys become headers, values become rows.
Can I convert CSV to JSON?
Yes. Paste CSV, click Convert to JSON. Output is array format.
View API response in Excel?
Convert API JSON to CSV with this tool, open in Excel. Easier to analyze.
JSON array vs object?
Array [] converts to CSV. Single object {} = one row. APIs usually return arrays.
CSV delimiter?
Comma standard. Some locales use semicolon. This tool outputs comma-separated.
Comma in JSON key?
Values get quoted in CSV. Excel parses correctly.
Large JSON to CSV?
Processed in browser memory. A few MB typically. Split or use server for huge data.
Does this tool send data?
No. All processing in browser. Sensitive data stays local.
Related tools
JSON & Data Format Set