Is the CSV to JSON tool free to use?

Yes, our CSV to JSON tool is completely free.

Are my data files safe?

Your CSV data is processed locally on your device. We never see or store your files.

Does it handle different delimiters like semicolons or tabs?

Yes, our tool automatically attempts to detect the correct delimiter (comma, semicolon, or tab) based on your file's content.

What happens to the header row?

By default, the first row is used as the keys for the resulting JSON objects.

CSV to JSON Converter

Transform CSV spreadsheet data into structured JSON objects safely in your browser.

Input CSV File

Click to upload or drag and drop

text/csv, .csv (MAX. 50MB per file)

Convert to JSON

Your CSV file will be parsed and formatted as JSON securely in your browser.

About This Tool

Convert your CSV files into valid JSON format. Our tool automatically detects common delimiters (comma, semicolon, or tab) and intelligently parses quoted fields. The first row of your CSV will automatically be used as the object keys.

Frequently Asked Questions

How to use CSV to JSON

1
Select your file
Open CSV to JSON and add your file — drag and drop it or click to browse. Your file is processed locally in your browser and is never uploaded to any server.
2
Process
Transform CSV spreadsheet data into structured JSON objects safely in your browser.
3
Download the result
Preview the output and download it instantly — 100% free, no watermark and no sign-up required.

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