How Much does 1 Gallon of water weigh?

How many of us would have asked the question of how much does water weigh? When we were kids we were all taught that water has three forms which are solid, liquid and vapor. Water in solid state is in the form of ice and in the liquid state it takes the form of anything that it is put in.

Water is measured in liters, therefore 1 liter is 1000 cubic cm in volume and 1 milliliter is 1cc in volume. Water is also weighed in 1 kilogram per liter but this no more the same as water changes in density with the change in temperature and pressure in the atmosphere. It is believed that tap water in denser as compared to pure water thus the density of water is 997.13 kg /m3. A simple conversion of water should be know:

1 m = 100 cm
1 kg = 1000 g
1 L = 1.0567 US quarts (qt)
1 qt = 4 cups
1 lb = 16 oz = 453.59 g

It is also important to know the difference between weight and volume as many people still seem to get confused about it. Weight is how heavy it is and Volume is how big it is. Different substances have different weights but put in the same size (volume) for example if cotton is filled in a bucket would be lighter as compared to stones filled in the same bucket. Therefore liquids are on different density like water, will weigh more than oil which is put in the same cup. This measurement is a universal equation and people use the same around the world.

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