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

  1. Paste JSON array and click Convert to CSV
  2. Or paste CSV and click Convert to JSON
  3. 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.

Is JSON to CSV Converter free?

Free to use, no sign-up required.

Is data sent to a server?

Data stays on your device; we do not store it on our servers.

Supported browsers?

Tested on recent Chrome, Edge, Firefox, and Safari.

Offline use?

Core features work offline after the first load.

vs CLI or desktop apps?

JSON to CSV Converter is an install-free online alternative to CLI or desktop apps.

When to use it?

Use it when: API response to Excel, data export/import.

Usage example?

Example: [{"name":"A","age":20}] → name,age\nA,20

Main features?

JSON→CSV, CSV→JSON, Nested support

How is this different from similar tools?

JSON to CSV Converter runs in the browser with no install—ideal for quick checks before heavier CLI or IDE workflows.

Search keywords

JSON to CSV Converter

Basic workflow

  1. Paste JSON array and click Convert to CSV
  2. Or paste CSV and click Convert to JSON
  3. Copy result to open in Excel or use in data

Practical use cases

  • API response to Excel, data export/import.
  • 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.
  • JSON→CSV
  • CSV→JSON

Privacy & data handling

Data stays on your device; we do not store it on our servers.

Things to watch out for

  • Always double-check before pasting output into production
  • Try incognito if extensions break the page
  • Wait for processing on large inputs

Related learning content

Related tools

Tool set

JSON & Data Format Set