CSV to JSON Converter

Convert CSV data to JSON format. Handles quoted fields, auto-detects data types,...Convert CSV data to JSON format. Handles quoted fields, auto-detects data types, and supports multiple delimiters. All processing happens in your brow...

100% SecureSecureInstant ProcessingFastNo SignupFree

Delimiter:

First row is headerAuto-detect types(?)Trim whitespaceMinify output

Valid CSV · 3 rows × 4 fields

Ctrl+S JSONdrop a .csv file

CSV Input

Fields4 of 4 selected

JSON Output

First 5 rows only

[ { "name": "John Doe", "age": 30, "city": "New York", "active": true }, { "name": "Jane Smith", "age": 25, "city": "Los Angeles", "active": false }, { "name": "Bob Johnson", "age": 45, "city": "Chicago", "active": true } ]

Conversion Summary

Records

Fields

283

Characters

283 B

Size

SSL Secured

256-bit Encryption

Cloud Processing

Mobile Friendly

Converter Features

Real-time Conversion - Results update as you type

Configurable Delimiters - Comma, semicolon, or tab

Auto Type Detection - Numbers, booleans, and nulls

Minify Option - Compact or pretty-printed output

Header Detection - Toggle first-row-as-header

One-Click Copy - Copy JSON to clipboard instantly

Why Use CSV to JSON Converter?

Instant Conversion

Convert CSV to JSON in real-time as you type. No waiting, no page reloads required.

Multiple Delimiters

Support for comma, semicolon, and tab delimiters. Works with any CSV variant.

Auto Type Detection

Automatically detects numbers, booleans, and null values for accurate JSON output.

100% Private

All conversion happens in your browser. Your data never leaves your device.

Common Use Cases for CSV to JSON

API Development

Convert CSV exports to JSON format for use in REST APIs and web applications.

Data Migration

Transform spreadsheet exports into JSON for importing into NoSQL databases.

Frontend Development

Convert CSV data to JSON for use in JavaScript applications and frameworks.

Data Analysis

Prepare CSV data as JSON for use with charting libraries and visualization tools.

How It Works

Paste CSV Data

Enter your CSV data directly or use the sample data to see how it works.

Configure Options

Choose your delimiter, toggle header detection, and select output formatting.

Copy JSON Output

View the converted JSON instantly and copy it to your clipboard with one click.

Tips for CSV Conversion

Check Your Delimiter

If the output looks wrong, try switching delimiters. European CSVs often use semicolons instead of commas.

Validate Before Using

Always preview the JSON output to ensure data types were detected correctly before using in production.

Quoted Fields

If your CSV contains commas within field values, make sure those fields are wrapped in double quotes.

Frequently Asked Questions

The first row is used as field names (headers) by default. Each subsequent row becomes a JSON object with those field names as keys and the row values as values.

We support comma (,), semicolon (;), and tab delimiters. Choose the one that matches your CSV format. The most common is comma.

Yes! Fields containing delimiters, newlines, or quotes can be wrapped in double quotes. Quotes within quoted fields should be escaped by doubling them ("").

The converter automatically detects numbers, booleans (true/false), and null values. Text remains as strings. You can disable this auto-detection if needed.

Yes, since all processing happens in your browser, there are no upload size limits. Performance depends on your device, but typical files convert instantly.

Uncheck the 'First row is header' option. The converter will generate column names automatically (column1, column2, etc.).

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