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CSV Data Handyman

by WebF1

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CSV to JSON

Convert CSV to JSON in your browser

Turn CSV rows into a clean JSON array. Rename destination fields, build nested objects with dot notation (for example contact.email), convert types, and download the result. Everything runs locally in your browser.

Example output

[
  {
    "firstName": "Ada",
    "lastName": "Lovelace",
    "contact": {
      "email": "ada@example.com"
    }
  }
]
Your file is processed locally in your browser and is never uploaded to WebF1.

Import CSV

Drag and drop a CSV file here, or

Paste CSV text instead

Frequently asked questions

Can I build nested JSON objects from CSV columns?
Yes. Use a dot-notation destination such as contact.email and CSV Data Handyman will construct a nested object with the path contact: { email: ... } for each row.
How are numbers and booleans handled?
Choose a data type per column (Text, Number, Boolean, Date, or Null when blank). Values that cannot be converted are flagged in the validation summary and rendered as null.
Can I exclude empty fields from the output?
Yes. Tick "Exclude empty fields" in the output settings and any empty, null, or undefined value is omitted from the JSON.
Is there a row limit?
The default maximum CSV file size is 25 MB. Large outputs are previewed in a bounded window but can still be downloaded in full.

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