Get How Much Does 1 Gallon Of Water Weigh Pictures. Usually measured by its volume, water is a heavy substance. Ballpark calculation (for all temperatures) 1 gallon is about 3.75 liters 1 liters = 1 kilogram (density of water is 1 kg/liter) 1 kg is about 2.2 lbs so, 3.75 kg is about 8.25 lbs and 1 gallon is about 8.25 lbs
At 70 f, a gallon of water weighs about 8.33 pounds, as noted by the usgs water science school.
(19.9 kg = 43 lb 13. This is especially if it's stored in a container or when it puts pressure on physical objects or anything that gets in its way. Vegetable and corn oils are both denser than olive or coconut oil. Usually measured by its volume, water is a heavy substance.