JSON ↔ CSV Converter

About this JSON ↔ CSV Converter

JSON is hierarchical; CSV is a flat table of rows and columns. Converting between them is common when exporting API data into spreadsheets or importing spreadsheet rows into APIs and databases.

This tool maps JSON arrays of objects to CSV headers and rows, and rebuilds JSON from CSV. Nested structures may need flattening—keep that in mind for deep objects.

Conversion runs client-side so sample exports and PII-heavy tables stay on your machine while you reshape formats.

How to use this tool

Choose the direction: JSON to CSV or CSV to JSON.
Paste your source data into the input area.
Run the conversion and review column headers and row counts.
Copy the output into Excel, Google Sheets, or your application.

Common use cases

Export JSON API dumps for analysis in spreadsheets
Import CSV product or user lists into JSON for seed scripts
Quickly reshape test fixtures between formats

FAQ

How are nested objects handled?

Deep nesting often flattens poorly into pure CSV. Prefer flat object arrays for clean round-trips.

Are types preserved?

CSV is text; numbers and booleans may come back as strings unless you coerce them in code.

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