What this tool does
It converts delimited rows of CSV or TSV data into JSON, turns JSON arrays back into CSV or TSV text, and lets you inspect tabular data in a table viewer.
CSV <-> JSON Converter
Convert spreadsheet-style CSV or TSV data into JSON, or turn JSON arrays back into CSV or TSV. The conversion runs entirely in your browser, so the data is never uploaded or stored in server memory.
CSV to JSON reads each row of CSV data and turns it into JSON objects or arrays.
Output actions
Convert, copy, download, swap, or reopen structured data from one shared results area.
Table preview
View CSV rows or tabular JSON as an actual table so it is easier to scan before or after conversion.
Rows
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Columns
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Preview source
No preview yet
Convert some data to render a preview table here.
Why it is private
Parsing and conversion happen locally in your browser, so your CSV and JSON are not sent to the server or stored in server memory.
What it is useful for
- Moving data between spreadsheets, APIs, and config files.
- Inspecting CSV data as structured JSON.
- Turning JSON arrays into a format that is easier to paste into spreadsheet tools.
Important note
JSON to CSV works best with arrays of objects or arrays. Nested objects and arrays are preserved as JSON strings inside CSV cells when needed.