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CSV → JSON

FreePrivateQuoted fields

Convert CSV files or pasted spreadsheet rows into structured JSON instantly. Supports headers, quoted values, commas inside cells, and private in-browser processing.

  • Paste from Excel or Google Sheets
  • Rows become JSON objects
  • Handles quoted fields
  • No upload required
Need the other direction?JSON → CSV
CSV input

Tip: First row should contain column names.

JSON output
Ctrl+Enter Convert to JSON

CSV to JSON Converter Online

Turn spreadsheet rows into JSON objects in seconds. Paste CSV data, convert headers into keys, and export structured JSON ready for APIs, apps, scripts, or databases. Everything runs locally in your browser.

Where Is This Useful?

API Testing
Create JSON payloads from spreadsheet data.
Frontend Development
Use arrays directly in React, Vue, or Next.js apps.
Data Migration
Convert CSV exports into structured records.
Automation
Use JSON in scripts and workflow tools.

How to Use

  1. Paste CSV data.
  2. Keep headers in first row.
  3. Click Convert to JSON or press Ctrl+Enter.
  4. Review output.
  5. Copy or download data.json.

Example

CSV
name,age,city
Alice,30,London
Bob,25,Paris
JSON
[
  { "name": "Alice", "age": "30", "city": "London" },
  { "name": "Bob", "age": "25", "city": "Paris" }
]

Features

  • Instant conversion
  • Handles quoted fields
  • Private browser processing
  • Copy or download JSON
  • Mobile friendly
  • Developer ready output

Frequently Asked Questions

Is it free?

Yes. Use the converter as much as you like with no fee or sign-up.

Is data uploaded?

No. Conversion runs in your browser; your CSV does not get uploaded for processing.

Does it support quoted commas?

Yes. Wrap cells that contain commas in double quotes. The parser follows common CSV quoting rules, including doubled quotes inside a field.

Can I paste from Excel?

Yes. Copy from Excel or Google Sheets, paste here, and keep the first row as column names.

Can I download JSON?

Yes. After converting, download data.json from the toolbar on desktop or from the export sheet on mobile.

Why are values strings?

Strings keep spreadsheet values exact. Parse numbers or booleans in your own code when you need typed data.

What if rows have different columns?

Fix the sheet so every row matches the header width. The tool will point to the first row that does not line up.

Does it work on mobile?

Yes. The layout is touch friendly: paste, convert, then copy or download from the export menu.

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