CSV → JSON

Select a CSV file and download the JSON. The file never leaves your browser.

Accepted format: .csv · Maximum size: 10 MB

Select file

or drag a file here

How it works

The CSV is read only in this browser. The first line is used as the header; values are kept as text. Incomplete rows get empty fields; rows with extra columns are rejected.

What this tool does

Convert a CSV file into JSON for an API, script, or data inspection.

Before you start

The first row becomes object keys and values remain text, so IDs and leading zeroes are not silently changed.

Privacy

This tool runs in your browser; the text or file you choose is not uploaded for processing. Read the privacy details.