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Data Tool

Convert CSV into JSON records or turn JSON records into CSV rows.

Data Tool

CSV JSON Converter

Convert tabular CSV data into JSON arrays or turn JSON records back into CSV directly in the browser.

This is useful for data imports, exports, spreadsheet handoff, mock datasets, and lightweight transformation work during development.

Tool UI

Convert CSV and JSON

About the CSV JSON converter

This page converts between CSV rows and JSON objects in the browser. It is useful when moving data between spreadsheets, exports, APIs, fixtures, and frontend debugging tools.

The first CSV row is treated as the header row. Each following row becomes a JSON object whose keys come from those headers, which is the format many importers and tests expect.

How to use the CSV JSON tool

  1. Paste CSV data with a header row and select CSV to JSON to produce an array of objects.
  2. Or paste a JSON object or array of objects and select JSON to CSV.
  3. Review the output and copy it into your import, export, or test workflow.

What is CSV?

CSV stands for comma-separated values. It is a simple text format for tabular data and is widely used in spreadsheets, exports, imports, reporting tools, and lightweight data transfer.

Why convert CSV and JSON?

CSV is convenient for people and spreadsheets, while JSON is convenient for APIs and application code. Converting between them helps bridge spreadsheet workflows and structured application data.

Practical examples

Use CSV to JSON when a product manager sends a small spreadsheet that needs to become seed data, a fixture, or a request payload. Use JSON to CSV when API output needs to be reviewed in a spreadsheet or shared with someone who does not want to inspect nested braces.

The converter handles quoted CSV cells and escaped quotes, so values containing commas can stay in one column instead of being split into separate fields.

CSV conversion limits

  • CSV input should include a header row.
  • JSON to CSV expects a JSON object or an array of JSON objects.
  • Nested JSON objects are stringified into a single CSV cell.
  • Very large files are better handled with a script or dedicated data tool.