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CSV to JSON Converter

Convert CSV rows to JSON objects instantly.

How This Tool Works

The CSV to JSON Converter transforms comma-separated value data into JSON format. CSV (Comma-Separated Values) is the most common data export format from spreadsheets, databases, and analytics tools. JSON is the standard format for APIs, NoSQL databases, and modern web applications. The converter uses the first row as the key names (headers) and each subsequent row as a JSON object. The output is an array of objects, ready for import into MongoDB, use in a JavaScript application, or storage in a JSON field.

How to Use

  1. Paste your CSV data in field A (first row must be the header row with column names).
  2. Click Run. The result is a JSON array of objects, one per CSV row.
  3. Each key in the JSON objects corresponds to a column header from the CSV.
  4. If values contain commas, they must be wrapped in double quotes in the CSV.

Common Questions

What happens if a CSV value contains a comma?

Values containing commas must be enclosed in double quotes in CSV: name,description becomes 'Apple','A fruit, red or green'. Most spreadsheet exports handle this automatically.

Can I convert CSV with special characters or accented letters?

Yes, if the CSV is UTF-8 encoded. Files exported from Excel may be in Windows-1252 encoding — if you see garbled characters, save the CSV as UTF-8 in Excel first (File → Save As → CSV UTF-8).

How do I import the JSON output into MongoDB?

Save the JSON array to a file (data.json), then use: mongoimport --db mydb --collection items --file data.json --jsonArray. The --jsonArray flag is required when the file contains an array of documents.

Read the full guide →