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Convert a JSON array of objects into clean, spreadsheet-ready CSV.
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JSON to CSV converts a JSON array of objects into clean, spreadsheet-ready CSV, the reverse of CSV to JSON, and the bridge for getting structured data out of code and into Excel, Google Sheets, or a database import.
It builds the header row from the union of all keys across your objects, so even if records have slightly different fields, nothing is dropped, missing values simply become empty cells. That lossless flattening is important when JSON data isn't perfectly uniform, which it often isn't.
Correct escaping is the other half of a reliable converter. Values containing commas, quotes, or newlines are quoted and their internal quotes doubled per the CSV standard, so the output opens cleanly in spreadsheet apps without columns shifting. Because CSV is flat, nested objects and arrays are serialised as JSON text within their cell, flatten first if you need them split out.
Everything runs in your browser, so your JSON is never uploaded. Pair it with CSV to JSON to round-trip data and the other ToolsMonk developer and MS Office tools for the rest of your data workflows.
| Price | Free, no signup, no paywall, no watermark |
|---|---|
| Works on | Any modern browser: desktop, tablet, and mobile |
| Processing | In your browser, files never leave your device |
| Account required | None |
| Category | Developer Tools |
Paste a JSON array of objects
Click Process
The tool builds a header row from all keys and writes one CSV row per object
Copy or save the CSV for your spreadsheet or import
Converts a JSON array of objects into spreadsheet-ready CSV
Headers built from the union of all keys, so nothing is dropped
Proper escaping of values containing commas, quotes, or newlines
Handles objects with differing keys gracefully
Runs entirely in your browser, nothing is uploaded
Free, with no signup and no rate limit
Exporting API or app JSON data into a spreadsheet
Turning JSON records into CSV for Excel, Google Sheets, or a database import
Flattening structured data for analysis or reporting
Sharing JSON data with people who work in spreadsheets
Make sure your JSON is an array of objects, that's what maps cleanly to rows and columns
Irregular objects are fine: missing keys just leave empty cells, and all keys still appear as columns
Flatten deeply nested JSON first if you want each nested field in its own column rather than serialised in one cell
Common questions about this tool, its workflow, and what to expect before you use it.
IETF
Defines quoting, escaped quotes and line breaks inside CSV fields.
IETF
Defines valid JSON, which is what the validator checks your input against.
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