The efficiency calculation formula is a mathematical expression used to measure the efficiency of a system or process. It is based on the ratio of the output to the input, and is usually expressed as a percentage. The formula is used to compare the efficiency of different systems or processes, and to determine the best way to improve the efficiency of a system or process. Efficiency calculation formulas are used in many industries, including manufacturing, energy, and transportation. In manufacturing, the formula is used to measure the efficiency of production processes, such as the number of parts produced per hour or the number of parts produced per unit of time. In energy, the formula is used to measure the efficiency of energy production and consumption, such as the amount of energy produced per unit of fuel. In transportation, the formula is used to measure the efficiency of vehicles, such as the number of miles per gallon or the number of miles per hour. The efficiency calculation formula is an important tool for businesses and organizations to measure and improve the efficiency of their operations.