CSV to JSON Converter
Convert CSV data to JSON format with customizable delimiters and header options.
About This Tool
CSV to JSON Converter is a free online tool that parses CSV data and transforms it into a clean, structured JSON array of objects — instantly, in your browser. It supports comma, semicolon, and tab delimiters, handles quoted fields with embedded commas or newlines correctly, and lets you toggle whether the first row is treated as column headers.
The parser runs entirely client-side — your data never leaves your browser. The JSON output is formatted with indentation for readability and is immediately ready to copy or download. If your CSV has no header row, disabling the headers toggle produces an array of arrays instead of objects, which some data tools prefer.
CSV to JSON is most commonly used by developers transforming spreadsheet exports for use in APIs or databases, data analysts converting reporting CSVs into JSON for visualization tools, and anyone bridging legacy CSV systems with modern JSON-based APIs or configuration formats.
How to Use
- 1
Paste your CSV data into the input field, or upload a CSV file.
- 2
Choose your delimiter (comma, semicolon, or tab) and set whether the first row contains headers.
- 3
Copy or download the resulting JSON output.
- 4
Toggle 'First row as headers' off to get an array of arrays if your CSV has no header row.
- 5
Copy the JSON output and use it directly in your code, API, or database import.
Features
Flexible Delimiters
Parse CSV files with comma, semicolon, or tab delimiters to handle different regional formats.
Header Detection
Toggle whether the first row is used as keys for JSON objects or treated as data.
Quoted Field Support
Correctly handles fields that contain commas, newlines, or quotes inside double-quoted strings.
Structured Output
Produces a clean, indented JSON array of objects ready to use in any application.
Common use cases
- ›Convert spreadsheet exports to JSON for use in REST APIs or database import scripts.
- ›Transform reporting CSVs from tools like Salesforce, Google Analytics, or HubSpot into JSON.
- ›Parse tab-separated value (TSV) files exported from databases or data warehouses.
- ›Convert product catalog CSVs into JSON for e-commerce platforms or headless CMS imports.
FAQ
Does it handle quoted fields?
Yes, fields with commas inside double quotes are parsed correctly, including escaped quotes.
What if I don't use headers?
Uncheck 'First row as headers' to get an array of arrays instead of an array of objects.
What delimiters are supported?
Comma (standard), semicolon (common in European locale CSV exports), and tab (TSV format).
Can I import the output into MongoDB, Firebase, or other databases?
Yes. The output is a standard JSON array of objects compatible with most NoSQL databases, REST APIs, and data import tools.
Is there a file size limit?
No hard limit. Processing happens in your browser. Very large CSV files (hundreds of MB) may take longer to parse depending on your device.