JSON Swiss

JSON Swiss

CSV to JSON Converter

Need the reverse conversion?
JSON to CSV Converter

CSV Input

1

JSON Output

Settings

Conversion Options

Enter CSV data to convert to JSON

Your converted data will appear here

How to convert CSV to JSON

  1. Step 1 – Input CSV data

    • Paste CSV content (comma-separated, tab-separated, etc.) into the left panel.
    • Or click the demo icon to load sample data and test the conversion quickly.
    • The tool can handle common delimiters like comma, tab, and semicolon.

  2. Step 2 – Configure parsing options

    • Open Settings to manually select a delimiter when auto-detection fails (for example, pipe | separated files).
    • Enable “First row contains headers” to use the first line as JSON keys (for example, “id”, “name”).
    • Toggle “Skip empty lines” to remove blank rows and trailing whitespace from the output.

  3. Step 3 – Review the JSON result

    • Each CSV row becomes a JSON object, and the output is a JSON array.
    • Numbers and booleans may be detected and converted from strings where possible.
    • Confirm the structure matches your expectations in the right panel.

  4. Step 4 – Export JSON

    • Copy the generated JSON to your clipboard for immediate use.
    • Download it as a .json file to save into your project.
Example: CSV to JSON
// Input CSV
id,name,role
1,Alice,Admin
2,Bob,User

// Output JSON
[
  {
    "id": "1",
    "name": "Alice",
    "role": "Admin"
  },
  {
    "id": "2",
    "name": "Bob",
    "role": "User"
  }
]

Related CSV & JSON tools

JSON to CSV

Convert JSON back to CSV for Excel, Google Sheets, or exports.

JSON Validator

Validate the generated JSON to ensure it meets standard syntax requirements.

Frequently Asked Questions

What CSV formats are supported?

This tool supports standard CSV with customizable delimiters (comma, semicolon, pipe, tab). You can also choose whether the first row should be treated as headers.

How does header detection work?

When “First row contains headers” is enabled, the first row becomes JSON keys. When disabled, generic keys like “column1”, “column2” are used.

Can I customize conversion settings?

Yes. Open Settings to adjust delimiter, header detection, and whether to skip empty lines during conversion.

What happens with empty CSV rows?

Empty rows are skipped by default for cleaner JSON output. You can disable this option in Settings if you need to preserve empty entries.

Is my data secure?

Yes. All processing happens locally in your browser. Your data is never uploaded to any server.

CSV to JSON Converter Online | JSONSwiss