What is the weight of one gallon (gal.) of water?

The weight of one gallon of water is commonly accepted as 8.34 pounds at 62 degrees Fahrenheit, which is considered the standard temperature for this measurement. This value is significant as it is used in various calculations and applications in fields such as hydraulics and fluid dynamics, leading to an understanding of water weight for system maintenance, whether in residential plumbing or industrial systems.

This calculation is based on the density of water, which is approximately 62.4 pounds per cubic foot, and since there are 7.48 gallons in a cubic foot, the weight per gallon becomes 62.4 lb/7.48 gal, resulting in the weight of approximately 8.34 lb per gallon. Knowing this weight is essential for tasks such as calculating load capacities, determining pump capacities, and managing the physical requirements of water in different systems.

The other figures presented do not represent the conventional weight of a gallon of water, thus making them inaccurate for practical applications in water and fuel systems maintenance.