Calculators
Useful calculators for everyday tasks
Roman Numerals Converter
Convert between Arabic numbers and Roman numerals instantly. Bidirectional converter supports 1-3999. Perfect for historical dates, clock faces, book chapters, and educational purposes.
Temperature Converter
Convert temperatures between Celsius, Fahrenheit, and Kelvin instantly. Enter a temperature in any unit and see conversions to all others. Includes common temperature references and conversion formulas.
Age Calculator
Calculate your exact age in years, months, days, and even hours. Find out when your next birthday is, what day you were born, and fun statistics about your age.
3D Molecule Viewer
Visualize chemistry molecules in interactive 3D. Rotate, zoom, and explore molecular structures. Choose from common molecules or enter your own. Perfect for chemistry students and educators.