CSV to JSON Converter

Paste CSV, get JSON — headers from the first row, numbers kept as numbers.

FREE TOOL · WORKS OFFLINE · NO SIGN-UP

    
Results update instantly as you type.

  


  

    

      
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How to Use This CSV to JSON Converter

    
    
      
  1. 1.Paste your CSV. The first row must hold the column headers.
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  2. 2.Read the JSON. It updates live and is pretty-printed with two-space indent.
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  3. 3.Check the numbers. Values that look numeric, like 30, become real JSON numbers, not strings.
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  4. 4.Mind quoted fields. Fields wrapped in double quotes can contain commas safely.
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  5. 5.Copy the result. Select the output and paste it into your code, API test or data tool.
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FAQ

    
What does a small CSV become in JSON?

    
The CSV name,age with a row Alice,30 becomes [{"name":"Alice","age":30}] when pretty-printed: an array with one object, where age is the number 30, not the string 30.

    
Which row becomes the headers?

    
The first row. Every value in that row becomes a key name, and every row below it becomes one JSON object using those keys.

    
Are numbers kept as numbers?

    
Yes. A field that looks like a number, such as 30 or 4.5, becomes a JSON number. Anything else stays a string, so names and codes are never mangled.

    
Is this CSV to JSON converter free?

    
Yes — 100% free, no sign-up, no limits. Everything runs in your browser; none of your numbers are uploaded or saved.

  


  
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