ToolsKing - Practical Online Tools Platform
Free, Secure, and Easy-to-Use Online Tools Collection
ToolsKing provides professional and practical free online tools collection, including currency converter, number base converter, time tools and more. All tools are completely free to use, no registration required, privacy protected.
Converters
Currency Converter
Free currency converter and exchange rate calculator. Convert USD to RMB, EUR to USD, CNY to JPY and 180+ world currencies with real-time rates
Number Base Converter
Convert between binary, octal, decimal, hexadecimal and other number bases
Color Converter
Online color format conversion tool supporting HEX, RGB, HSL, HSV, CMYK and other format conversions
Unit Converter
Online unit conversion tool supporting length, weight, temperature, area, volume and other unit conversions
Data Format Converter
JSON, Excel, CSV data format converter with file upload and download support for data analysis and API development
Developer Tools
JSON Formatter
Powerful JSON formatter and validator tool with syntax highlighting, error detection, and file support. Format, minify, and validate JSON data easily
Regex Tester
Online regular expression testing and validation tool with real-time matching and syntax highlighting
JWT Decoder Tool
JWT token parser and validator supporting Header, Payload, Signature parsing with token expiration and status checking
Text Diff Tool
Text difference comparison and analysis tool supporting line-by-line, word-by-word, and character-by-character comparison with highlighted changes
URL Encoder/Decoder
Online URL encoding and decoding tool supporting both encodeURI and encodeURIComponent modes
Security Tools
Password Generator
Secure password generation tool that creates 10 strong passwords at once. Supports custom length, character types and password purposes to avoid special character conflicts
Hash Generator
Multi-algorithm hash encryption tool supporting MD5, SHA-1, SHA-256 and other algorithms with real-time string hash calculation
String Encoder Decoder
Multi-format string encoding and decoding tool supporting Base64, URL, HTML, Unicode and 8 other encoding formats with real-time conversion
Image Tools
Base64 Image Converter
Bidirectional converter between images and Base64 encoding supporting JPG, PNG, GIF formats with drag-and-drop upload and local processing
Image Coordinate Picker
Image coordinate picker and annotation tool supporting click-to-get bbox coordinates and draw rectangles from coordinates for machine learning data labeling
QR Code Generator
Online QR code generation tool supporting text, URLs, emails, phone numbers and more with custom styling
Utility Tools
Time Tools
Real-time clock display and world time zones. View current time with analog clock interface and time from major cities around the world
Country Codes
Complete ISO country codes lookup with 2-letter, 3-letter and numeric codes, capitals, phone codes and time zones. Features real-time search filtering and one-click copy function covering 195+ countries and territories worldwide
Why Choose ToolsKing?
Completely Free
All tools are completely free to use with no hidden costs or registration required
Privacy Protected
All processing happens locally in your browser, ensuring your data privacy and security
Easy to Use
Clean and intuitive interface design makes all tools simple and easy to use
Stable & Reliable
Real-time data updates ensuring accurate and reliable results