JSON to CSV Converter
Convert a JSON array into a CSV spreadsheet — free, private.
Getting API Data Into a Spreadsheet
An API or database export handed to you as a JSON array of objects is exactly what a developer wants to work with, and exactly what most non-technical colleagues can't easily open — a spreadsheet, on the other hand, everyone can open. This tool converts a JSON array into a CSV file, ready to drop into Excel, Google Sheets, or any spreadsheet tool.
How the Conversion Maps Structure
The tool reads your JSON array, uses the keys from the first object as column headers, then maps each object in the array to one row, placing each key's value into its corresponding column. Because CSV is a flat, two-dimensional format (rows and columns) while JSON can represent arbitrarily nested structures, deeply nested objects or arrays within a field get flattened or stringified during conversion, since there's no native way to represent nesting inside a single spreadsheet cell.
A Worked Example
A JSON array of five customer records, each shaped like {"name":"Ali Raza","email":"ali@example.com","orders":3}, converts into a CSV with three columns — name, email, orders — and five data rows, opening directly in Excel or Google Sheets with each customer's data in its own row, ready for sorting, filtering, or a pivot table without any manual re-typing of the original JSON data.
Who Reaches for This
A developer handing off API data to a non-technical colleague or client who needs it in a spreadsheet, not raw JSON. Someone exporting a list of survey responses or form submissions stored as JSON from a backend, needing to analyze them in a familiar spreadsheet tool. A data analyst pulling records from an API for a report that ultimately needs to live in Excel. Anyone bridging the gap between a developer-facing data format and a business-facing one.
What Happens to Nested Data
A flat JSON object with simple key-value pairs (strings, numbers, booleans) converts cleanly to spreadsheet columns with no ambiguity. A field containing a nested object or an array — like a "tags" field holding a list of several values — doesn't map naturally to a single spreadsheet cell, so it typically gets converted to a stringified representation of that nested data within one cell, which is readable but not itself further sortable or filterable the way a genuinely flat field would be.
Preparing Your JSON for the Cleanest Result
For the most usable CSV output, make sure every object in your array shares the same set of keys — if some records have a field others lack, the resulting CSV will show blank cells for the records missing that field, which is expected behavior, not an error, but worth knowing to avoid confusion when reviewing the output.
Processed Entirely On Your Device
The array-to-rows conversion runs with client-side JavaScript in your browser — data exported from a database or API, which may include customer or business information, is never uploaded to a server during the conversion.
JSON to CSV vs. a Spreadsheet's Own Import Feature
Google Sheets and Excel both offer some ability to import structured data, but neither natively imports raw JSON arrays without an add-on or manual restructuring first. Converting to CSV first sidesteps that limitation entirely, since CSV import is universally supported by every spreadsheet tool without any extra setup.
A Second Example
A marketing team receives a JSON export of newsletter signups from a developer, containing name, email, and signup-date fields for 800 subscribers. Converting it to CSV here produces a file that opens directly in Google Sheets, letting the team filter by signup date and prepare a segmented list — a task that would otherwise require asking the developer to redo the export in a different format.
What happens if my JSON objects have different sets of keys?
The resulting CSV includes a column for every key found across all objects, leaving cells blank for any record that doesn't include a particular field.
Can I convert a single JSON object instead of an array of objects?
The tool is built for arrays of similarly structured objects, since that maps naturally to spreadsheet rows; a single standalone object would need to be wrapped in an array first.
Does nested data inside a field get lost during conversion?
It's typically preserved as a stringified representation within its cell rather than discarded, though it won't be independently sortable or filterable the way a flat field would be.
What delimiter does the exported CSV use?
Standard comma-separated format is used, matching what Excel and Google Sheets expect by default when importing a .csv file.
Is there a limit to how many records I can convert at once?
No fixed limit — since conversion runs on your device rather than a server, a very large array will simply take proportionally longer to process.