What does 'First row is Header' do?

When checked, the tool uses the first line of your CSV to generate keys for the JSON objects. If unchecked, the JSON output will be an array of arrays instead of objects.

Is my data sent to any server?

No. All conversion logic runs locally in your web browser. Your sensitive CSV data is completely safe and never transmitted anywhere.

ASAPUtils

CSV to JSON Converter Online

Convert CSV data to an array of JSON objects instantly. Free browser-based CSV to JSON transformer tool.

First row is HeaderSkip Empty LinesJSON Indentation:

CSV Input

JSON Output

What is the CSV to JSON Converter?

CSV (Comma-Separated Values) is the universal format for spreadsheets and data dumps, but modern web applications and APIs almost exclusively use JSON.

The CSV to JSON Converter instantly parses your tabular data and outputs a clean, perfectly structured JSON array.

How to convert CSV to JSON

Paste your CSV or TSV data into the left panel. The tool automatically detects the delimiter type.
Toggle First row is Header depending on whether your data includes column names.
Choose your desired JSON indentation level.
Your converted JSON array will appear instantly in the right panel, ready to be copied!