JSON to CSV Converter
Convert structured JSON and CSV data in both directions without uploading a file.
Your privacy is safe, this tool runs entirely in your browser. Nothing you enter is uploaded to or stored on our servers.
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How to use JSON to CSV Converter
- 1Choose JSON to CSV or CSV to JSON.
- 2Paste data or load a local .json or .csv file.
- 3Choose the delimiter and conversion options.
- 4Review, copy or download the converted result.
Convert JSON and CSV without losing sight of the data
This JSON to CSV converter turns API-style object arrays into spreadsheet-ready rows. The reverse mode parses real CSV quoting rules and creates JSON objects from the header row.
Always check record counts, column names and identifiers after conversion. CSV does not carry a universal schema, so leading zeros and date-like strings may need to remain text.
Frequently asked questions
What JSON shape can be converted to CSV?
Use an array of objects, where each object represents a row. A single object is treated as one row. Nested objects can be flattened into dot-separated columns.
Does the CSV parser support quoted commas and line breaks?
Yes. The parser handles quoted fields, escaped double quotes and line breaks inside quoted values.
Will CSV values keep their original data types?
CSV has no universal type metadata. When converting to JSON, optional type detection recognizes common numbers, true, false and null values. Keep it off when identifiers such as 00123 must remain text.
Can I upload a large file?
The file is processed in browser memory. Moderate exports work well, but very large datasets are better handled with streaming command-line or database tools.
Is my data uploaded?
No. Pasted and selected data stays in your browser.