JSON to CSV Converter

CSV (comma-separated values) is the universal format for spreadsheets and data imports. When an API returns JSON but you need the data in Excel, Google Sheets, a database import, or a reporting tool, this converter turns your JSON into a clean table in one step.

• Flatten nested objects

  Nested objects become dot-notation columns such as address.city, so every value gets its own column.

• Any delimiter

  Use comma, semicolon (common in European Excel), tab (TSV), or pipe delimiters.

• Correct quoting

  Values with delimiters, quotes, or line breaks are quoted following RFC 4180, so spreadsheets read them correctly.

• Flexible input

  Works with arrays of objects, a single object, arrays of arrays, and arrays of plain values.

• Consistent columns

  Columns are collected from every row, so records with missing keys simply get empty cells.

• Private by design

  The conversion runs entirely in your browser. Your data is never uploaded.

[
  { "id": 1, "name": "Ada", "address": { "city": "London" } },
  { "id": 2, "name": "Alan, Jr.", "address": { "city": "Manchester" } }
]

id,name,address.city
1,Ada,London
2,"Alan, Jr.",Manchester

The nested address object is flattened into an address.city column, and the value containing a comma is quoted.

1. Paste a JSON array into the input editor, or upload a .json file.
2. Choose a delimiter and whether to include a header row and flatten nested objects.
3. The CSV output updates instantly as you type.
4. Copy the CSV or download it as a .csv file and open it in your spreadsheet app.