Convert CSV to JSON Free – Quick Data Converter Tool

Convert CSV to JSON Free - Easy Data Converter

Convert CSV to JSON Free

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Drop your CSV files here or click to browse
Supports multiple files • CSV format • Client-side processing
CSV Parsing Options

About This Tool

Our CSV to JSON converter is a powerful, free tool that transforms CSV (Comma-Separated Values) files into JSON format. Perfect for data migration, API integration, and converting spreadsheet data into a format suitable for web applications and databases.

This tool processes your files entirely in your browser, ensuring complete privacy and security. No data is sent to any server, and all conversions happen locally on your device.

Key Features

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100% Private

All processing happens locally in your browser

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Multiple Files

Convert multiple CSV files simultaneously

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Instant Results

Fast conversion with immediate download

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Mobile Friendly

Works perfectly on all devices and screen sizes

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Flexible Options

Customizable parsing and formatting settings

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Easy Download

Download converted files instantly

How to Use

  1. Upload Files: Drag and drop your CSV files into the upload area or click to browse and select files
  2. Configure Options: Choose your CSV parsing preferences using the dropdown and checkboxes
  3. Convert: Click the "Convert to JSON" button to start the conversion process
  4. Preview: Review the converted JSON content in the preview area
  5. Download: Click the download button to save your converted JSON files

Supported Input: CSV files (.csv, .txt with CSV format)

Output Format: JSON (.json) files

Frequently Asked Questions

What CSV formats are supported?
The tool supports standard CSV files with various delimiters including comma, semicolon, tab, and pipe. It can handle files with or without headers, quoted fields, and different encoding formats. Most spreadsheet exports are compatible.
How does data type detection work?
When auto-detect is enabled, the tool analyzes each column to determine if values are numbers, booleans, dates, or strings. Numbers are converted to numeric types, "true/false" becomes boolean, and ISO dates are preserved. You can disable this to keep all values as strings.
Is my data secure when using this converter?
Yes, absolutely! This tool processes all files locally in your browser. No data is uploaded to any server or transmitted over the internet. Your CSV data remains completely private and secure on your device.
Can I convert multiple CSV files at once?
Yes! You can select and convert multiple CSV files simultaneously. Each file will be processed individually and you'll get separate JSON files for each input file.
What if my CSV has special characters or encoding issues?
The tool handles UTF-8 encoding and most special characters correctly. If you encounter issues, try saving your CSV with UTF-8 encoding from your spreadsheet application before conversion.
Are there any file size limitations?
The tool can handle reasonably large CSV files, but very large files (over 50MB) might cause performance issues in your browser. For best results with large datasets, consider splitting them into smaller files.

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