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Convert JSON to CSV in Seconds
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Drop in a JSON array or object and get a clean, spreadsheet-ready CSV back in seconds — no uploads, no installs, no fuss.
By EasyConvertTools.com
Drop your JSON files here
or click to browse
Supports .json files
Converting…
How to Convert JSON to CSV
- 1
Drag one or more JSON files into the box above, or click it to browse and select them from your computer — batches of files all convert together.
- 2
Your browser parses the JSON, flattens any nested objects into dot-notation columns, and joins arrays with semicolons, then builds a CSV with one row per item and a header row covering every key it found.
- 3
Download each CSV individually, or click Download All to save the whole batch at once — everything happens locally in this tab.
Why Convert JSON to CSV
JSON is the format APIs and modern apps speak natively, but it's awkward to inspect at scale — a deeply nested array of objects is hard to skim, sort, or hand to someone who just wants to open it in a spreadsheet. CSV trades JSON's flexibility for a flat grid of rows and columns, which is exactly what spreadsheet programs, databases, and reporting tools expect.
Converting JSON to CSV is the usual bridge between an API response or export and a tool that only understands tabular data — pasting a JSON array straight into Excel doesn't work, but a converted CSV opens cleanly with proper columns and rows. Nested objects get flattened into dot-notation columns like address.city, and arrays inside an object are joined into a single semicolon-separated cell rather than dropped, so no data silently disappears in the conversion.
Because the parsing, flattening, and CSV generation all happen on a canvas-free pass entirely inside your browser tab, the JSON file you're converting — which might contain API keys, customer records, or other sensitive data — never gets uploaded anywhere. It's read, transformed, and downloaded without a single network request involved.
JSON vs CSV: Format Comparison
| Feature | JSON | CSV |
|---|---|---|
| Structure | Nested objects and arrays | Flat rows and columns |
| Readability | Easy to read in code | Easy to skim in a spreadsheet |
| Data Types | Strings, numbers, booleans, null | Everything is text |
| Nested Data | Native support | Flattened into dot-notation columns |
| Best Use Case | APIs, config files, web apps | Spreadsheets, databases, reporting |
| File Size | Larger due to key repetition | Smaller for flat data |
| Universal Import | APIs, JavaScript, most languages | Excel, Sheets, databases |
| Free to Use | Yes | Yes |
JSON is what APIs and modern apps speak natively, but CSV is what spreadsheets and databases expect. Converting JSON to CSV is the usual bridge between an API response and a tool that only understands tabular data.
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Frequently Asked Questions
What JSON structure is supported?
Both a JSON array of objects (the standard tabular shape, where each object becomes a row) and a single JSON object (which is automatically wrapped in a one-row array) are supported. Each object's keys become CSV columns.
How are nested objects handled?
Objects nested one level deep are flattened into dot-notation columns — for example, an "address" object with a "city" field becomes a column named address.city. Objects nested more than one level deep are converted to a JSON string in their cell instead of being flattened further.
What happens to arrays inside JSON objects?
Arrays are joined into a single cell with semicolons separating each value, so a tags field like ["a", "b"] becomes a; b in the CSV rather than being split across multiple columns or rows.
Can I convert a single JSON object (not an array)?
Yes. If the file's root is a single object rather than an array, it's automatically treated as a one-row table and converted the same way as any other entry in an array.
Is my file uploaded to a server?
No. The JSON is parsed and converted to CSV entirely inside your browser tab using plain JavaScript — nothing is uploaded, stored, or logged on a server at any point.
Related tools: Excel to CSV , XML to JSON , MSG to PDF