A book in pharmaceutical calculations laden with worked examples and making it easy for even the slowest leaner to grasp the concepts of mathematics in pharmaceutical practice. The author has been teaching pharmaceutical calculations at the university level for the past twenty-five years. The author also realized that students come from various backgrounds, some being good in mathematics and some lacking the proper background and hence, not as good. The manual is designed to simply provide a reference material in pharmaceutical calculations that can be used by students of all levels (dispensers, pharmaceutical assistants, and technicians as well as pharmacy degree students) regardless of their backgrounds. The manual is an asset to both students and tutors alike. It is also intended to impart ability to students to work independently and understand practical problems that occur in practice from time to time. In writing this manual, the author carefully followed various curricula of pharmacy at certificate, diploma, and degree levels of various institutions. The manual also addresses components of the curriculum of nursing courses, particularly calculations involving doses and dosages. Thus, trainers will choose topics relevant to the level they are dealing with. The manual is enriched with over 350 worked examples and about 150 practice questions with answers to make self-study possible. With many practical worked examples, even the slowest learner can be taken onboard. Furthermore, this manual will be a quick reference for practicing pharmaceutical technicians, nurses, and pharmacists.