Does it handle quoted CSV fields?

Yes. Fields containing commas or quotes enclosed in double quotes are parsed correctly per CSV spec.

What delimiters are supported?

Comma (,), semicolon (;), tab, and pipe (|).

Does it convert string numbers to JSON numbers?

Yes. Numeric string values like "42" are automatically converted to JSON numbers.

Can I convert JSON back to CSV?

Yes! Click the swap button (⇄) to switch to JSON-to-CSV mode.

Is there a file size limit?

No strict limit, but very large files (>10MB) may be slow. Split into smaller chunks if needed.

ToolsArena

Search tools...

CSV to JSON

Convert CSV to JSON and JSON to CSV — fast bidirectional converter.

Updated Mar 2026100% Private — runs in browser

CSVJSON

Delimiter:

Upload file

CSV Input

JSON Output

[
  {
    "name": "Alice",
    "age": 28,
    "city": "New York",
    "email": "alice@example.com"
  },
  {
    "name": "Bob",
    "age": 34,
    "city": "London",
    "email": "bob@example.com"
  },
  {
    "name": "Charlie",
    "age": 22,
    "city": "Tokyo",
    "email": "charlie@example.com"
  }
]

Input: 122 chars·Output: 303 chars·3 rows

How to Use CSV to JSON

1
Paste CSV data or click "Upload file" to load a .csv file.
2
Select the correct delimiter for your CSV.
3
JSON output appears instantly in the right panel.
4
Click "Copy" or "Download" to save the result.
5
Use the swap button to convert JSON back to CSV.

About CSV to JSON

Convert CSV data to JSON and JSON back to CSV instantly with our free bidirectional CSV to JSON converter. Paste data, upload a file, and get results in real time.

Key Features

Bidirectional: Convert CSV→JSON or JSON→CSV with a single toggle.
Multiple Delimiters: Supports comma, semicolon, tab, and pipe-delimited files.
Auto Type Detection: Numeric string values like "42" are automatically converted to JSON numbers.
Quoted Fields: Handles quoted fields containing commas correctly per CSV spec.
Download Output: Save result as .json or .csv file.

Who Is This For?

Developers transforming data between formats, data analysts working with spreadsheets and APIs, and anyone needing a quick CSV/JSON conversion without writing code.

Privacy & Security

Runs 100% in your browser — no data is sent to any server. No signup required.