CSV to JSON Converter – Convert CSV Online

100% Client-Side

Parse CSV files or raw CSV data into structured JSON arrays with automatic data type casting and delimiter detection. Convert CSV to JSON instantly with syntax highlighting and download options—all processing happens in your browser.

Home/CSV to JSON Converter – Convert CSV Online

Format Validate Beautify Tree View Minify Diff JSON → CSV CSV → JSON JSON → YAML YAML → JSON JSON → TS

Delimiter:First Row is HeaderParse Data Types

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How to use CSV to JSON Converter

Paste or upload your CSV data in the input area.
Configure delimiter, header row, and data type parsing options as needed.
Watch the JSON output update in real time as you type or after uploading.
Use the Copy or Download buttons to save the JSON array.
Click the Sample CSV button to load an example.

CSV TEXT INPUT0 chars

JSON ARRAY OUTPUT0 items

Key Capabilities

Automatic type casting (numbers, booleans, and null values)

Configurable delimiter parsing: Comma (,), Tab (\t), Semicolon (;)

Header row detection & object array generation

Frequently Asked Questions

What does CSV to JSON conversion do?

CSV to JSON conversion transforms tabular CSV data into structured JSON arrays, making it easy to use CSV data in web applications, APIs, and data processing pipelines.

How does the parser handle numbers and boolean flags in CSV?

When 'Parse Data Types' is enabled, numeric fields are converted into JavaScript numbers and 'true'/'false' strings are parsed as booleans, while empty or null values become null in JSON.

Can I convert CSV without a header row?

Yes, if the 'First Row is Header' option is unchecked, the converter will treat all rows as data and generate generic headers like column1, column2, etc., or you can rely on positional indexing in the resulting JSON arrays.