CSV and JSON Converter

Convert flat CSV, TSV, TXT, and JSON data between table and JSON formats. Files are processed and deleted automatically.

Tip: JSON input should be an array of flat objects for the cleanest conversion.

Upload a data file

Drop your CSV, TSV, TXT, or JSON file here or click to browse

Maximum file size: 25MB

No file selected

Output format Input delimiter Output delimiter Treat first row as header

Please upload a file first.

What can this converter turn into JSON or CSV?

It converts flat CSV, TSV, TXT, and JSON files between delimited table format and JSON array output.

What JSON structure works best?

The cleanest input is an array of flat objects where each object uses the same set of keys.

Can it detect the incoming delimiter automatically?

Yes. Auto mode tries common delimiters such as comma, semicolon, tab, and pipe, or you can force one manually.

What does Treat first row as header do?

When enabled, the first row becomes field names for JSON output or is preserved as the header row when exporting to CSV or TSV.

Can I export TSV instead of standard CSV?

Yes. Choose CSV or TSV style output using the output delimiter selector.

Are converted files stored after download?

No. Files are processed temporarily to generate your output, then deleted automatically. Tiny File Tools does not require signup for these tools.