JSON vs CSV: Which Format Is Better for Your Data?

Not directly. Nested objects and arrays must be flattened, placed in encoded cells or separated into multiple tables. The best mapping depends on how the destination system expects the data.

CSV is often smaller for large flat datasets because column names usually appear once in the header. JSON may be more efficient when preserving nested structure avoids awkward duplication or extra files.

CSV is easier to open as a simple table. JSON is better when structure matters, but it generally needs conversion or Power Query before typical spreadsheet users can review it comfortably.

Verify the chosen columns, nested-field flattening, array handling, delimiter, character encoding, date values and leading zeros before importing the file into another system.