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CSV to JSON - Free Online Tool

Paste CSV data and convert it to JSON. The first row is treated as headers (object keys), and each following row becomes one object in an array. Supports comma, semicolon, and tab delimiters, and respects quoted fields so values containing commas or newlines are handled correctly. Conversion runs entirely in your browser; no data is sent to a server. Useful for importing spreadsheet or export data into APIs, configs, or scripts that expect JSON.

Convert CSV to JSON

How to Use This Tool

  1. Paste your CSV into the input box. The first line should be the header row with column names.
  2. Choose the delimiter that matches your CSV: comma, semicolon, or tab.
  3. Click Convert to generate JSON (an array of objects).
  4. Copy the result or clear to start over.

Benefits of Using This Tool

  • No signup; runs in your browser with no data uploaded.
  • Proper handling of quoted fields and common delimiters.
  • Output is formatted JSON (pretty-printed) for readability.

When to Use CSV to JSON

  • Turning spreadsheet exports or CSV downloads into JSON for an API or app.
  • Converting CSV from a database or reporting tool into a format your code can consume.
  • Quick one-off conversions without writing a script or installing a library.

Decision Guide

Best for

  • CSV with a single header row and uniform columns per row.
  • Data that will be consumed as an array of objects in JavaScript or other runtimes.

Avoid when

  • You need to preserve complex types (numbers, dates); output values are strings. Parse in your app if needed.
  • CSV has multiple header sections or inconsistent columns; you may need to clean or transform the data first.

Example

CSV to array of objects

Input

name,score
Alice,95
Bob,87

Output

[{"name":"Alice","score":"95"},{"name":"Bob","score":"87"}]

First row defines keys; each data row becomes one JSON object. Values are strings in JSON.

FAQs

Is my CSV sent to a server?

No. Conversion runs entirely in your browser. Your data never leaves your device.

What if my CSV uses semicolons or tabs?

Use the delimiter dropdown to select Semicolon (;) or Tab. The parser will split fields using that character.

Are numbers and dates converted to types?

No. Every cell is output as a JSON string. If you need numbers or dates, parse them in your application after conversion.

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