JSON to CSV Converter
Convert a JSON array of objects into CSV for spreadsheets and data tools.
From JSON records to a spreadsheet
Data often arrives as JSON but needs to go into a spreadsheet or a tool that speaks CSV. This converts a JSON array of objects into CSV, using the object keys as the header row and each object as a row, so an API response or a data export drops straight into a spreadsheet as proper columns.
Paste your JSON array and it is converted to CSV.
Where the shapes don't line up
The conversion is cleanest when the objects are flat and share the same fields. Two things need handling: objects with different keys, where some rows have gaps, and nested objects or arrays inside a field, which have no simple CSV cell — these are usually flattened or serialised into a single cell. For a uniform array of flat records, the result is a clean spreadsheet; for messy nested JSON, check the output represents the data the way you need. It pairs with the reverse converter for CSV back to JSON.
Frequently asked questions
What JSON converts cleanly to CSV?
A flat array of objects that share the same fields — keys become the header row, objects become rows.
What happens to nested data?
Nested objects and arrays have no direct CSV cell, so they are flattened or serialised into a single field.
Is my JSON uploaded?
No. The conversion happens in your browser.