Accurate dosage calculation is essential for all nurses to master. It is crucial to equip students with the right tools to build a strong foundation and establish lifelong confidence in calculation and maintaining patient safety. The updated Clinical Nursing Calculations, Third Edition empowers students with the confidence and skills to safely calculate the right medication dosage to their patients. Drawing from their extensive experience across the continuum of care, the authors employ the CASE approach (Convert, Approximate, Solve, Evaluate) for performing dosage calculations while presenting side-by-side comparisons of all three methods of calculation. This systematic step-by-step approach accounts for students’ different learning styles, whether they prefer to utilize the Ratio-Proportion, Formula Method, or Dimensional Analysis method of calculation.