Free CSV to JSON Converter

Turn spreadsheet exports into clean JSON arrays in seconds. This free converter correctly handles quoted fields, embedded commas and line breaks, custom delimiters, and optional header rows — then outputs pretty-printed JSON ready for your code.

JSON output


    

    

  



  
Private by design. This tool runs 100% in your browser — your code is never uploaded to any server.

  

    
How to Use the CSV to JSON

    
    
      
  1. Paste your CSV data or drop it into the input box.
    2. 
      
  2. Set the delimiter (comma, semicolon, tab, or pipe) and header options.
    3. 
      
  3. Click Convert to JSON to generate the array.
    4. 
      
  4. Copy the JSON or download it as a .json file.
    5. 
    

  

  

    
Features

    
The parser is fully quote-aware: fields wrapped in double quotes can contain delimiters, escaped quotes (""), and even multi-line values without breaking the row structure. The first row becomes object keys by default, with an option to treat data as headerless arrays instead. Custom delimiters cover European semicolon-CSV and TSV exports, and the output is pretty-printed JSON you can paste straight into JavaScript.

    
Benefits & Use Cases

    
Developers convert client spreadsheet dumps into API seed data and test fixtures; data analysts reshape exports for tools that speak JSON; anyone migrating between systems bridges the CSV/JSON gap without writing a throwaway script. Local conversion keeps sensitive datasets off external servers.

    
Tips

    
If your columns split in the wrong places, check the delimiter — European Excel often exports with semicolons. Empty trailing lines are ignored automatically. For huge files (tens of MB), convert in chunks to keep the browser responsive.

  

  

    
Frequently Asked Questions

    
How are CSV headers handled?
By default the first row becomes the property names of each JSON object. If your data has no header row, enable “headerless” mode to get arrays instead of objects.

    
What if my data contains commas inside fields?
Properly formatted CSV wraps such fields in double quotes, which this parser honors — quoted commas never split a field. Escaped quotes ("") are unescaped correctly too.

    
Which delimiters are supported?
Comma, semicolon, tab, and pipe. Pick the one matching your file; semicolon is common in locales where the comma is the decimal separator.

    
Can I convert back from JSON to CSV?
Yes — use the companion JSON to CSV tool on this site for the reverse conversion.

    
Is there a row limit?
There is no hard limit, but very large pastes (tens of thousands of rows) are best processed in chunks for smooth browser performance.

    
Is my data uploaded anywhere?
No. Conversion runs entirely in your browser — your CSV never leaves your device.

  

  

    
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