Convert JSON to CSV Online



Free online JSON to CSV converter - flatten arrays to a table

Convert directly in your browser, with no upload waiting time, and no risk of data leaks.

Simply choose your JSON file and the tool will create a CSV file for you!

Choose JSON File to Convert

JSON File:
(Max 10M. Big than 10M?)
or drag & drop a JSON file here
 




How to Convert JSON to CSV (3 Steps)

  1. Choose your JSON file. Select a .json file up to 10M.
  2. Convert. The tool detects the record array and maps the fields to CSV columns.
  3. Download the CSV. Open it in Excel, Google Sheets or import it into a database.

Online vs App

Same job, two ways — pick the one that fits your file:

OnlineApp
Free✓Trial
No install✓—
No upload✓✓
Large files / batch✗✓
GUI✓✓
CLI—✓

In short: this page is best for a quick, small file. For large files or batch jobs, use the DataFileConverter desktop app — it also ships a command line for scripts and scheduled runs.

What to Know About JSON to CSV

  • Arrays of objects are converted into rows, one object per row.
  • Nested objects are flattened into dotted column names.
  • Missing fields leave an empty cell instead of shifting the columns.
  • The file is parsed in your browser and is never uploaded.

Frequently Asked Questions

What JSON structure works best?

An array of objects works best; each object becomes a row and its keys become the header.

How are nested objects handled?

They are flattened and the nested key names are joined with a separator.

Can I convert JSON Lines?

For .jsonl / NDJSON use the merge JSONL tool or convert each line as JSON.

How much bigger is JSON than CSV? See our measured comparison: CSV vs JSON vs XML: file size and speed compared.

Related Tools

JSON to SQL | CSV to JSON | Excel to JSON | XML to JSON | Merge CSV files | Offline JSON to CSV

Need bigger files or batch conversion?

If this service cannot convert your data correctly, or your files are big than 10M, or you want a batch conversion, you can use Data File Converter to Convert JSON to CSV Offline.

Want to stay in the browser? Subscribe (from $5/month) to raise the online limits.

If you have any question or suggestion, please contact us.