Cattle Calculator allows beef cattle producers to make quick everyday calculations important for their operations. Calculations related to reproductive management, animal performance, and management decisions are available . Reproductive calculations include: calving date based on a known breeding date, breeding date based on a known calving date, number of days pregnant based on today's date and a breeding date, and a breeding season calculator which provides calving and breeding dates based on a set breeding season. Animal performance calculations include: Adjusted birth weight, weaning weight, and yearling weight, average daily gain and required gain. Management calculation include: dosage calculations for dewormers and medicines given an animal weight and manufacturer's recommended dosage, frame score calculations, trailer stocking density, and yield grade.