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Data Converters

Convert between data formats: JSON to CSV, Base64 encode/decode, URL encoding, case converters, timestamp converter, and more.

Transform data between different formats quickly and accurately with our data converter collection. Convert JSON to CSV and vice versa, encode and decode Base64, handle URL encoding, convert between number bases (binary, hex, decimal), transform timestamps, convert text case, and more. These tools are essential for developers, data analysts, and anyone working with different data formats. All conversions happen instantly in your browser.

All Data Converters (8)

Text Case Converters

Convert text to uppercase, lowercase, title case, camelCase, snake_case, and more. Perfect for formatting code, titles, and content.

Timestamp Converter

Convert between Unix timestamps and human-readable dates. Support for milliseconds and multiple time zones.

Number Base Converter

Convert numbers between binary, decimal, hexadecimal, and octal. Essential tool for programming and computer science.

JSON ↔ CSV Converter

Convert JSON to CSV and CSV to JSON bidirectionally. Perfect for data import/export and format conversion.

HTML ↔ Markdown Converter

Convert HTML to Markdown and Markdown to HTML bidirectionally. Perfect for documentation, blogs, and content migration.

URL Encode/Decode

Encode and decode URLs for web development. Convert special characters to URL-safe format and back.

Base64 Encode/Decode

Encode text to Base64 or decode Base64 strings. Essential for data transmission, APIs, and web development.

Text to Binary/Hex

Convert text to binary, hexadecimal, octal, or decimal. Encode and decode text in multiple number systems.

Frequently Asked Questions

Do these converters support large files?
Most converters can efficiently handle reasonably large files up to several megabytes, which covers the vast majority of use cases. Processing happens in your browser using optimized JavaScript, so performance depends on your device's RAM and CPU. Modern computers and laptops handle files up to 10MB easily, while very large datasets (50MB+) may take longer or require more powerful hardware. For massive enterprise datasets, consider using dedicated desktop software or server-side solutions.
Is Base64 encoding secure?
No, Base64 is an encoding method for data representation, not encryption or security. It converts binary data to ASCII text format but offers zero security - anyone can decode it instantly. Base64-encoded data looks scrambled but provides no protection against unauthorized access. Never use Base64 for passwords, API keys, or sensitive information that needs real security. For actual encryption, use proper cryptographic methods like AES encryption or TLS/SSL.
Can I convert CSV back to JSON?
Yes! Our JSON/CSV Converter is bidirectional - it converts JSON to CSV and CSV back to JSON format seamlessly. When converting CSV to JSON, the tool uses the first row as keys and creates an array of objects. This is perfect for working with data between spreadsheets and web applications. The converter preserves data types and handles special characters, quotes, and nested structures appropriately for each format.
What timestamp formats are supported?
Our Timestamp Converter supports multiple formats including Unix timestamps in seconds (10 digits) and milliseconds (13 digits), ISO 8601 format (2025-12-15T10:30:00Z), and human-readable date/time strings. It handles timezone conversions automatically and can parse most common date formats. The tool is perfect for converting between database timestamps, JavaScript Date objects, API responses, and user-friendly date displays across different systems and programming languages.
Are my converted files stored?
No, absolutely nothing is stored or uploaded. All file conversions happen entirely locally in your browser using client-side JavaScript. Your files never leave your device or get transmitted to our servers. This means you can safely convert sensitive business data, personal information, or confidential files with complete privacy. When you close the page, all data is immediately cleared from memory with no traces left behind.

Start Using Data Converters

All tools are free, work offline, and process data locally in your browser for complete privacy.

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