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Free Online CSV to JSON Converter

Convert CSV data to a JSON array instantly. Choose your delimiter, paste your CSV, and get clean JSON output with headers as keys.


  






  
  




How the CSV to JSON Converter Works
This tool converts CSV data into a JSON array of objects. The first row becomes object keys, subsequent rows become values. It supports quoted fields containing commas and handles common edge cases.
Supported Delimiters
Supports comma, semicolon, and tab delimiters. Semicolons are common in European locales. Tab-delimited data is exported by many spreadsheet applications and databases.
Working with the JSON Output
The JSON output is formatted with indentation for readability. Copy it directly for use in JavaScript applications, API testing, database imports, or configuration files.




  
  






  
Related Tools

  

    JSON to CSV Converter
    TSV to CSV Converter
    XML to JSON Converter
  






  
  





  
Frequently Asked Questions

  
  

    
Does the first row need to be headers?

    
Yes. The first row is used as object keys. If your CSV lacks headers, add them manually before converting.

  


  

    
How does it handle quoted fields?

    
The parser handles double-quoted fields correctly. Commas inside quotes are treated as data, not delimiters. Double quotes are escaped as two consecutive quotes.

  


  

    
Is there a size limit?

    
Processing is in-browser, so the limit depends on device memory. Files up to several megabytes work well on modern devices.

  


  

    
Does it preserve data types?

    
All values are output as strings. Post-process the JSON to convert numeric strings to numbers if needed.

  


  

    
Is my data sent to a server?

    
No. All conversion happens entirely in your browser. Your data never leaves your device.

  






  
  







  
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