JSON to CSV Converter.
Convert a JSON array of objects into clean CSV in one click. Pick your delimiter, choose how nested arrays expand, flatten objects to columns, and select exactly which fields to export — all in your browser.
No signup · No uploads · No file-size cap
CSV output
// Paste JSON and press “Convert to CSV”.Convert JSON to CSV online — free and private
A JSON to CSV converter turns structured JSON — most often a JSON array of objects — into comma-separated rows you can open in Excel, Google Sheets, or any data tool. Paste your JSON above, press Convert to CSV, and the tool flattens each record into a row with a header built from your keys. Because the whole conversion runs client-side, you can convert JSON to CSV online without ever uploading sensitive data to a server.
How to convert JSON to CSV in three steps
- Paste your JSON into the input, or click “Load sample” to see the format.
- Choose your options — delimiter, how nested arrays should expand, whether to flatten nested objects, and a header row.
- Convert and export — pick the columns you want, then copy the CSV or download it as
data.csv.
Handle nested arrays and objects your way
Real JSON is rarely flat, and that is where most converters fall down —
they only flatten with dot-notation and force one shape on you. This
tool gives you the full set of array modes:
expand to rows creates one CSV row per array item
(great for one-to-many data), join collapses an array
into a single cell with a separator, and keep as JSON
preserves the raw array inside the cell. Nested objects flatten into
readable parent.child columns, or you can switch flattening
off to keep them as JSON.
Custom delimiters, TSV, and Excel
Choose a comma, semicolon, tab, or pipe — or type your own delimiter. Selecting tab produces a TSV file; semicolon suits European spreadsheets; and the Excel BOM option makes accented and Unicode characters open correctly in Microsoft Excel. A built-in column picker lets you export only the fields you care about without editing your JSON first.
Why use this JSON to CSV tool?
Unlike converters that quietly upload your file and cap you around 10 MB, this one processes everything locally with no file-size limit and no paywall. It validates your JSON before converting, so malformed input is caught with the exact line and column of the error. Need the structure first? Use the JSON viewer to explore it as a tree, the JSON formatter to pretty-print, or the JSON validator to check syntax. Learn the details in our guide on how to convert JSON to CSV.
FAQ
JSON to CSV, answered.
How do I convert JSON to CSV online? +
Paste your JSON — usually an array of objects — into the converter above and press Convert to CSV. The tool flattens each object into a row, builds the header from your keys, and shows the CSV instantly. You can then copy it or download a .csv file. Everything runs in your browser, so nothing is uploaded.
How are nested objects and arrays handled? +
Nested objects are flattened into dot-notation columns like address.city and address.zip. For nested arrays you choose the behaviour: Expand to rows creates one row per array item, Join combines them into a single cell, and Keep as JSON writes the raw array into the cell. This lets you turn deeply nested JSON into a clean spreadsheet exactly how you need it.
Can I use a custom delimiter or make a TSV? +
Yes. Pick comma, semicolon, tab, or pipe — or type any custom delimiter. Choosing tab produces a TSV. Semicolon output is handy for European locales where Excel expects it. Enable the Excel BOM option so accented characters open correctly in Microsoft Excel.
Can I choose which columns to export? +
Yes. After converting, every detected column appears with a checkbox. Untick the fields you do not want and the CSV updates immediately — no need to edit your JSON first. Use the All / None buttons to select quickly.
Is there a file size limit? +
No. Because the conversion happens entirely on your device, the only limit is your browser's available memory. Large JSON exports that other converters reject — many cap around 10 MB — convert here without an upload or a paywall.
Is my JSON data safe? +
Completely. This JSON to CSV converter is 100% client-side. Your data is parsed and converted locally and is never sent to, stored on, or seen by any server, making it safe for API responses, exports, and private records.