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CSV to JSON

Convert CSV data to JSON format. Transform CSV files into structured JSON arrays.

How to Use CSV to JSON

1

Paste your CSV data

Copy CSV data from Excel, Google Sheets, or a .csv file and paste it into the input area. The first row should contain column headers.

2

Preview the JSON output

The converter automatically parses headers and rows into a formatted JSON array of objects. Review the structured output before using it.

3

Copy or download the JSON

Click copy to grab the JSON array for use in your application code, API, or database import.

About CSV to JSON

Convert CSV to JSON online for free with our CSV to JSON converter. Transform comma-separated values from spreadsheets and databases into structured JSON arrays instantly. The first row is automatically used as object keys, and each subsequent row becomes a JSON object. Perfect for importing Excel or Google Sheets data into web applications, APIs, and databases. Supports comma, tab, and semicolon delimiters. All parsing runs entirely in your browser — your data stays private.

Key Features

  • Convert CSV data to structured JSON array format instantly
  • Auto-detect column headers and delimiter types (comma, tab, semicolon)
  • Preview formatted JSON output before copying or downloading
  • Support for large CSV files with thousands of rows
  • Handles quoted fields, special characters, and multiline values
  • Free and private — all parsing happens in your browser

Frequently Asked Questions

How to convert CSV to JSON online for free?▾
Paste your CSV data into the converter and it instantly generates a JSON array where each row becomes an object with column headers as keys. No signup or payment required.
Does it use the first row as headers?▾
Yes. The first row is automatically treated as column headers, which become the property keys in each JSON object. Subsequent rows become the values.
How to convert Excel data to JSON?▾
Copy your data from Excel (Ctrl+C), paste it into the CSV to JSON converter, and the tool will parse the tab-separated values into a JSON array.
What delimiters are supported?▾
Comma-separated (CSV), tab-separated (TSV), and semicolon-separated formats are all supported. The tool auto-detects the delimiter in most cases.
How to import spreadsheet data into a web application?▾
Convert your spreadsheet to CSV format, paste it into this tool, and copy the resulting JSON. You can then use the JSON directly in JavaScript, Python, or any programming language.
Is this CSV to JSON converter safe and private?▾
Yes. All parsing happens entirely in your browser using JavaScript. Your CSV data is never uploaded to any server, making it safe for sensitive business and personal data.
Can it handle large CSV files?▾
Yes. The converter efficiently processes large CSV files with thousands of rows in the browser. Performance depends on your device but handles typical datasets smoothly.
Does it handle quoted fields and special characters?▾
Yes. The parser correctly handles quoted fields containing commas, newlines, and special characters according to the CSV specification (RFC 4180).