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CSV to JSON Converter

Convert CSV data into JSON format, correctly handling quoted fields, commas, and special characters.

Runs entirely in your browser — your files are never uploaded to a server.

Last updated

This tool processes your input entirely in your browser. Nothing is sent to our servers.

How It Works

1. Choose Your File

Drag & drop or select the file you want to work with.

2. Processed in Your Browser

Everything happens locally on your device — your file is never uploaded anywhere.

3. Download Your Result

Get your finished file instantly, ready to save or share.

About CSV to JSON Converter

Converting CSV to JSON matters when moving data from a spreadsheet into a system, script, or API that expects JSON rather than tabular data — common when integrating spreadsheet-based data into software.

Each row in your CSV becomes one JSON object, with column headers becoming the object’s field names — a direct, predictable mapping from CSV’s row-and-column structure to JSON’s array-of-objects format.

Make sure your CSV’s first row is a proper header row with clear field names, since those become the actual JSON keys in the output.

Frequently Asked Questions

How do I convert CSV to JSON?

Paste your CSV into the input box, leave First row is a header ticked if the top row holds column names, and click Convert to JSON. With headers you get an array of objects, one per row. Without headers you get an array of arrays. Conversion runs in your browser, so nothing is uploaded.

How do I convert a CSV file to JSON?

The tool does not take file uploads. Open the CSV in a text editor or spreadsheet, copy the contents, paste them into the input box and convert. Then copy the JSON or click Download .json to save it as data.json.

What does the JSON output look like?

With the header option on, each row becomes an object keyed by the header names, inside one array. All values come out as text strings, so numbers like 30 appear as "30". Quoted fields containing commas, quotes or line breaks are parsed correctly.

Does it support semicolon or tab delimited files?

No, it splits on commas only and there is no delimiter option. If your file uses semicolons or tabs, replace them with commas in a text editor first, taking care not to change any that sit inside quoted fields.

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