Professional Calculation Tools
We provide reliable online calculator tools based on accurate algorithms and verified data. All tools do not collect user personal information and are completely free to use.
Japanese Era Converter
A professional tool that converts Gregorian years to Japanese eras (Reiwa, Heisei, Showa, Taisho, Meiji) or vice versa. Based on accurate historical date data, it can be safely used for document preparation and academic research.
β Bidirectional conversion capability
β Based on accurate historical data
β Suitable for academic and business use
Japanese Zodiac Calculator (Eto)
A professional calculator that accurately determines Japanese zodiac signs (Eto) by entering your birth date. Applies traditional Risshun-based calculation methods to provide accurate results, along with detailed information about all 12 animals and their cultural backgrounds.
β Information for all 12 zodiac animals
β Cultural background explanations provided
β Suitable for education and cultural research
Election Age Checker
A professional tool that accurately checks if you are eligible to vote (18 years or older) for the 2025 21st Presidential Election. Performs accurate age calculations based on current election law standards to help you verify your voting eligibility in advance.
β Accurate age calculation method
β Instant voting eligibility verification
β Election law standards compliance
Service Usage Guide
Guidelines for using our safe and reliable online calculator service.
π Privacy Protection
This service does not collect any user personal information. All calculations are processed directly in the user's browser, and the input data is not transmitted externally, ensuring complete privacy protection.
β‘ Accuracy and Reliability
All calculation algorithms have been developed according to relevant laws and standard criteria. Through continuous verification and updates, we provide accurate results and can be safely used for academic and business purposes.
π» Ease of Use
Use directly in your web browser without any membership registration or software installation. Optimized for both mobile and desktop environments, you can use it conveniently anytime, anywhere.
π Completely Free
All calculator tools are provided completely free of charge. Anyone can use them freely without hidden costs or restrictions, and we are committed to continuous service improvement.