JSON to CSV Converter
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Convert JSON to CSV online
Convert JSON to CSV when structured API data needs to be opened in a spreadsheet, reviewed by non-developers, or imported into tools that expect rows and columns.
When should you convert JSON to CSV?
- Turn a list of JSON objects into spreadsheet rows
- Review API exports in Excel, Sheets, or BI tools
- Prepare simple structured data for CSV importers
- Share tabular data without asking recipients to parse JSON
Before you convert
Flat objects work best
Nested arrays and objects are serialized inside cells because CSV has only rows and columns.
Headers come from keys
The converter builds CSV columns from object keys, so inconsistent JSON objects may create sparse rows.
What happens to your file
The JSON is parsed, and its nested keys and arrays are flattened into a readable shape before being written as CSV. You get the data as something a person can read, not a re-serialisation.
Settings this conversion runs with
| Input | JSON parsed and validated |
|---|---|
| Nested data | Flattened into rows or indented blocks |
| Output | CSV |
What changes
- Deeply nested structures do not map cleanly onto a flat format. Arrays of objects convert well; a tree ten levels deep will need choices made for it.
- A malformed JSON file stops the job with a parse error rather than producing a half-converted document.
About JSON and CSV files
JSON file
Strengths
- human-readable
- supported everywhere
- nested structures
Limitations
- verbose for large data
- no comments
CSV file
Strengths
- universally supported
- plain text and lightweight
- easy to process
Limitations
- no formulas or formatting
- single table only
JSON vs CSV
| Format | JSON | CSV |
|---|---|---|
| Compression | — | — |
| Transparency | — | — |
| Best for | APIs and config, structured data exchange | importing and exporting data, simple tables |
Guides for this conversion
- CSV to Excel: encodings, delimiters, and the leading-zero problem
CSV looks like the simplest file format there is. It is also the one that quietly corrupts phone numbers, dates, and product codes. Here is why, and how to convert without losing data.
- JSON, XML, and YAML to documents: flattening nested data
Structured data is a tree. A spreadsheet is a grid and a document is a page. Converting between them requires decisions — here is what those decisions are and when the conversion is the wrong idea.
Related tools
Frequently asked questions
- How does the JSON to CSV conversion work?
- The JSON is parsed, and its nested keys and arrays are flattened into a readable shape before being written as CSV. You get the data as something a person can read, not a re-serialisation.
- What should you know before converting JSON to CSV?
- Deeply nested structures do not map cleanly onto a flat format. Arrays of objects convert well; a tree ten levels deep will need choices made for it.
- Is this JSON to CSV converter free?
- Yes. You can convert JSON to CSV online for free, with no account and no watermark.
- Do I need to install software or sign up?
- No. Use the converter from your browser without installing software or creating an account. Files are uploaded to our servers for processing.
- Are my files safe?
- Yes. Files are processed only to complete the conversion and are auto-deleted after 2 hours. We never share them.
- Can I convert multiple JSON files at once?
- Yes. Drop several files to convert them in a batch and download the results as a single ZIP.