CSV to JSON Converter
Upload a CSV file and convert it to structured JSON. Uses headers as keys for clean, ready-to-use JSON output.
Drop your CSV file here
Transform your CSV data into JSON format
Supports .csv, .tsv, and .txt files up to 10MB
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Why Convert CSV to JSON?
JSON is the standard data format for web APIs, JavaScript applications, and modern databases like MongoDB. Converting CSV to JSON makes your data instantly usable in web applications, REST APIs, and data pipelines without manual transformation.
How the Conversion Works
Our converter uses the CSV headers as JSON keys and creates an array of objects, with one object per row. CSV values remain JSON strings, and special characters are escaped correctly. The upload is discarded after processing, and the output is kept for up to 1 hour for download.
Frequently Asked Questions
What JSON format does the output use?
The output is an array of objects: each CSV row becomes a JSON object, column headers become keys, and every CSV value remains a JSON string.
Are data types preserved in the JSON output?
All CSV values remain strings in the JSON output, so "42" stays "42" and "true" stays "true".
What happens if my CSV has duplicate column headers?
If your CSV contains duplicate column headers, the later column's values will overwrite the earlier one in each JSON object. To avoid data loss, rename duplicate headers in your CSV before converting.