Santekno/tools
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JSON → CSV

Convert a JSON array of objects into RFC 4180 CSV. Configurable delimiter; embedded commas/quotes properly escaped.

Processed in your browserUpdated · Jan 2026
Input
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Output
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How to use JSON → CSV

Paste your input on the left, choose the options you want, and the output appears instantly on the right. Everything runs in your browser — none of your data is sent to a server.

  • Paste or type your input in the INPUT panel
  • The output regenerates automatically as you type
  • Use Copy to put the result in your clipboard
  • Click Sample to load a working example

What is JSON → CSV?

JSON → CSV takes a JSON array of objects with a uniform schema and emits RFC 4180–compliant CSV with one header row derived from the first object's keys. Fields containing commas, double quotes, or newlines are properly quoted and escaped. Configurable delimiter (comma, semicolon, or tab) for Excel/Google Sheets compatibility. Non-array input or heterogeneous schemas return a clear error. This tool is part of santekno's developer toolbox — a curated collection of utilities built for engineers who care about speed, privacy, and simplicity.

Common use cases

  • Debugging API payloads and integration issues
  • Inspecting tokens, hashes, or encoded strings during development
  • Generating fixtures and sample data for tests
  • Sharing readable output with teammates in code reviews

FAQ

CSV is inherently a tabular format. Arrays of objects map one-to-one onto rows and columns. Other JSON shapes lack this structure.