Conversion Scenarios

Step-by-step recipes for common JSON and CSV conversion tasks — each runs in a live, in-browser tool, with nothing uploaded.

API JSON to Excel CSV — Take a real API response and turn it into a CSV that Excel can open cleanly.
Nested JSON to flat CSV — Turn nested objects and arrays into a flat CSV without letting the converter silently guess.
JSON array to spreadsheet — Convert an array of JSON objects into columns you can open in Excel, Google Sheets, or pandas.
CSV to JSON for an API — Turn a CSV file into a JSON array you can send to an API or inspect before import.
JSON to CSV for pandas — Prepare JSON data for pandas.read_csv() without writing a one-off flattening script.