Book excerpt: Make dosage calculations easier to master with dimensional analysis. Dosage calculations can be intimidating, but they don’t need to be. Dimensional analysis is an easy, systematic approach that shows you how to master simple to complex calculations with consistency and accuracy and reduce medication errors to ensure that drugs are administered safely and documented correctly. Dimensional analysis, which can be used on virtually every dosage calculation problem, eliminates the need to use other methods or perform lengthy, multi-step calculations. It’s a method of problem-solving that organizes data in a manner that is easy to understand and apply.