UUUP Tools

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JSON to CSV Converter Online

Convert an array of JSON objects to CSV with selectable delimiters and optional nested-object flattening. Everything runs locally.

Quick switch→CSV to JSON
JSONCSVConverter
Quick switch:CSV to JSONCSV to TSVJSON Formatter

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Use cases

  • Export an API object array to a spreadsheet
  • Prepare test data for CSV-compatible software
  • Turn an operations list into filterable rows

How to use

  1. Paste an array of JSON objects
  2. Choose a delimiter and flattening option
  3. Copy the generated CSV

Example input and output

Input

[{"name":"uuup","role":"tool"},{"name":"astro","role":"framework"}]

Output

name,role
uuup,tool
astro,framework

FAQ

How are CSV columns selected?

The converter collects object keys for the header while preserving a predictable field order.

Must the input be an array?

Yes. Use an array of objects so each object can map to a CSV row.

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