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- 01Infers CSV column headers from all unique keys across every object in the array.
- 02Objects with missing keys produce an empty cell rather than breaking the row.
- 03Supports comma, semicolon, tab, and pipe delimiters for compatibility with any spreadsheet.
- 04Conversion runs 100% in your browser — your JSON data is never uploaded or stored.
Why You Need a JSON to CSV Converter
JSON is the default output format for APIs, databases, analytics platforms, and backend exports. But business stakeholders, data analysts, and most reporting tools expect spreadsheets — CSV files that open instantly in Excel, Google Sheets, or Numbers. Copying JSON into a spreadsheet by hand is impractical beyond a handful of rows.
Handytool's JSON to CSV converter flattens a JSON array into a table automatically. It scans every object for its keys, builds a union of all columns, writes one row per object, and escapes values that contain commas, quotes, or newlines — following RFC 4180 so the output round-trips correctly in Excel and Google Sheets. Everything runs in your browser, so API responses with sensitive data stay off third-party servers.
How to Convert JSON to CSV
- 01
Paste your JSON
Paste a JSON array, an API response, or any object into the left pane. An array of objects converts best — one object per row.
- 02
Choose a delimiter
Comma is the standard for most tools. Switch to semicolon for European Excel, tab for TSV, or pipe for data pipeline formats.
- 03
Preview the output
The right pane shows the CSV with headers inferred from object keys. Objects with missing keys produce empty cells rather than breaking the structure.
- 04
Copy or download the CSV
Copy the CSV to the clipboard or click Download to save it as converted.csv, ready for Excel, Google Sheets, Numbers, or a database import.
JSON Structures That Are Supported
- 01Arrays of objects (most common — one object becomes one row)
- 02Arrays of arrays (raw 2D tables)
- 03Single objects (converted to a two-column key/value table)
- 04Objects with inconsistent keys (missing fields become empty cells)
- 05Values containing commas, quotes, or newlines (auto-escaped per RFC 4180)
Your JSON Data Stays in Your Browser
The converter runs 100% in your browser using JavaScript. No data is sent to a server, no account is required, and nothing is logged. This matters when your JSON contains API keys, user records, financial data, or any other sensitive payload you would not want stored on a third-party service.
The tool also works offline. Once the page has loaded you can disconnect from the internet and keep converting. There is no server-imposed file size or row limit — the practical ceiling is your browser's available memory.
JSON to CSV FAQ
How do I convert JSON to CSV online?
Paste your JSON array into the left pane, choose a delimiter, and click Convert. Download the result as converted.csv or copy it to the clipboard.
Does it work with nested JSON?
Top-level scalar values are written directly. Nested objects or arrays are serialized as JSON strings in the cell so no data is lost — flatten the structure first if you need each field in its own column.
What if my objects have different keys?
The tool builds a union of all keys found across every object. Missing keys produce empty cells rather than breaking the row.
Can I open the output in Excel?
Yes. Download the .csv and open it in Excel, Google Sheets, Numbers, or LibreOffice. Switch to the semicolon delimiter if you are on a European Excel locale.
Is my JSON uploaded anywhere?
No. The converter runs entirely in your browser. Your data never touches a server and nothing is logged.
Does it escape commas and quotes inside values?
Yes. Any value containing the active delimiter, a double quote, or a newline is wrapped in double quotes and internal quotes are doubled, following RFC 4180.