CSV to JSON Converter

Convert CSV files to JSON directly in your browser. Upload a file or paste CSV text, preview the parsed table, then copy or download formatted JSON. All processing happens locally on your device — your data is not uploaded to JISO or any server.

CSV (Comma-Separated Values) is a plain-text table format. JSON (JavaScript Object Notation) is a structured format used by APIs and applications. This tool maps each CSV row to a JSON object, using the first row as column headers when that option is enabled.

JISO Group builds websites, branding, automation, and custom software. This converter is a free browser utility for developers and operators who need a quick CSV to JSON transformation without installing desktop software.

Questions

What is a CSV file?

A CSV file stores tabular data as plain text with one row per line.

Is my CSV data uploaded?

No. Conversion runs entirely in your browser.