What CSV formats are supported?

The converter supports all standard CSV formats with comma, semicolon, tab, or pipe delimiters. It handles UTF-8, Windows-1250, and other encodings automatically.

How does nested data handling work?

When converting JSON to CSV, nested objects can be flattened using dot notation (e.g., address.street) or stringified as JSON strings. Arrays are automatically converted to JSON strings. Choose your preferred method in the nested handling option.

Can I minify JSON output?

Yes! Use the minify toggle button to switch between formatted (pretty-printed) and minified (compact) JSON output. Minified JSON is ideal for production use and reduces file size.

CSV ⇄ JSON CONVERTER

Bidirectional CSV and JSON conversion with drag & drop support

CLIENT

INPUT

OUTPUT

Conversion mode

Input CSV

Drop files here or start Typing

CSV JSON TXT TSV

JSON Output

Auto-convert

0 INPUT

0 OUTPUT

0 ROWS

0 kB

Conversion analytics

CONVERSIONS

COPIED

CHARS PROCESSED

CSV to JSON

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EFFICIENCY

How to use CSV ⇄ JSON converter

Professional data conversion in just 3 simple steps

Full Documentation Docs

Choose mode

Choose CSV to JSON or JSON to CSV conversion

Input data

Upload file or paste your data directly

Export result

Download converted file instantly

Bidirectional conversion

Multiple file formats

Advanced options

100% secure & private

Professional data conversion features

Everything you need for comprehensive CSV ⇄ JSON conversion

Bidirectional conversion

Convert CSV to JSON or JSON to CSV seamlessly. One tool for all your data transformation needs.

Auto-detect delimiter

Automatically detects CSV delimiter (comma, semicolon, tab, pipe). Analyzes first rows for accurate detection with TSV file support.

Nested data handling

Choose how to handle nested JSON: flatten to dot notation (address.street) or stringify objects. Arrays convert to JSON strings.

Advanced options

Configure delimiters, headers, formatting, and output structure to match your exact needs.

File support

Drag & drop CSV, JSON, TXT, and TSV files for instant conversion and analysis.

Swap functionality

Instantly reverse input/output and switch conversion direction. Transform CSV→JSON result back to CSV with one click.

Frequently Asked Questions

Everything about our CSV ⇄ JSON converter tool

How to convert CSV to JSON?

Choose CSV to JSON or JSON to CSV mode, upload your file or paste data, configure options like delimiter and headers, then click Convert. The tool automatically generates your desired output format instantly.

What file formats are supported?

You can upload CSV, JSON, TXT, and TSV files. The tool supports all standard delimiters and automatically detects format settings.

How does JSON to CSV work?

Switch to JSON to CSV mode, input your JSON data, choose delimiter and header options, then convert. The tool flattens nested objects automatically.

Can I handle large files?

Yes, the converter efficiently handles large files up to 50MB. Processing happens locally in your browser for optimal performance.

Are there export options?

Yes, you can download converted files, copy to clipboard, or view real-time statistics during conversion.

Is my data secure?

Absolutely. All processing happens locally in your browser. No data is uploaded to servers or stored anywhere. Your data stays 100% private.