How many grains are there in one pound?

One pound is equal to 7,000 grains. This measurement comes from the fact that a grain is a unit of weight traditionally used in the imperial system. It is defined as exactly 64.79891 milligrams. Since there are 16 ounces in a pound and each ounce contains 437.5 grains, multiplying 437.5 grains by 16 ounces results in a total of 7,000 grains in one pound. Understanding this conversion is essential for professionals in HVAC and refrigeration, as they often deal with various weights and measurements when calculating system capacities and refrigerant amounts.