Weights And Measures Plus (WAM+) features unit conversions for 237 units in 19 categories. Input and output can be in either Decimals or Fractions. A Trigonometry Calculator, a Temperature Converter with wind chill factor, a Roman Numeral Converter, a Number System converter, a new World Currency Exchange tool, and many Reference Tables are included. ALL units are defined in our extensive Online Reference and Glossary. Educational.