How Many Gallons in A Pound of Water?

Have you ever wondered how many gallons of water are in a pound? Sure, it might be a seemingly insignificant question, one that you might have never thought to ask. But, here’s the deal, knowing how many gallons there are in a pound of water is more important than you think. It’s crucial for a lot of everyday tasks, such as cooking, cleaning, and even swimming.

Especially since we often hear the recommendation to drink 12-15 cups of water a day for good health. 

Let’s take a moment to explore this intriguing question together!

1 pound of water is equivalent to 0.1198 gallons, or 1.9168 cups.

So, In this post, we will deeply discuss how to convert pounds of water to gallons and vice versa. We will also discuss why the metric system makes it much simpler to measure the weight of water. 

How Many Gallons in a Pound of Water?

To accurately determine the weight of water, you can use a simple and reliable method. First, pour the water into a container and measure its weight. Then, subtract the weight of the empty container to obtain the weight of the water. 

The weight of a 1-gallon Ziploc bag weighs 8.5 grams, so if you pour a gallon of water into it, you can subtract the bag’s weight to find the water’s exact weight. 

If you’re lacking a digital scale or a Ziploc bag to aid you in your water-weight-measuring quest, fear not! One pound of water is equal to 0.1198 gallons. 

By understanding the conversion rate of weight to gallons of water (0.1198), we can determine how many teaspoons, tablespoons, fluid ounces, cups, pints, and quarts are present in a pound of water.

VolumeGallon to VolumeWater volume per pound
Fluid ounces12815.3344

How Many Pounds in a Gallon of Water?

The weight of a gallon of water depends on the temperature of the water, but at room temperature (approximately 68 degrees Fahrenheit or 20 degrees Celsius), a gallon of water weighs approximately 8.34 pounds (3.78 kilograms).

It is also possible to determine how many teaspoons, tablespoons, etc., are needed to make a pound of water using the weight of a gallon of water.

VolumeGallon to VolumeWater Weight by Volume
Fluid ounces1280.0652

What Is The Weight Per Milliliter Of Water?

One milliliter (1 mL) of water weighs approximately 1 gram (g) at standard temperature and pressure (STP), which is defined as 0 degrees Celsius (32 degrees Fahrenheit) and 1 atmosphere (101.325 kPa) of pressure. Therefore, the answer is 1 gram of water per milliliter of water at STP.

Using the metric system, the following table shows the weight of water by volume.

Volume of waterWeight of water
1 ml1 g
2 ml2 g
5 ml5 g
10 ml10 g
100 ml100 g
500 ml500 g
1,000 ml1,000 g
1,500 ml1,500 g
2,000 ml2,000 g
5,000 ml5,000 g

Did you know that there are convenient conversions for commonly used units of measurement? Specifically, 1 liter is equivalent to 1,000 milliliters, while 1 kilogram is equivalent to 1,000 grams. Additionally, 1 milliliter can be expressed as 1 cubic centimeter (cc). 

With this in mind, it’s interesting to note that 1 kilogram can also be expressed as 1,000 cc. 

These conversions can be helpful in a variety of contexts, from cooking and baking to scientific experiments and measurements.


How many pounds is 1 gallon of water?

One US gallon of water weighs approximately 8.34 pounds.

How many gallons of water are in a pound of water?

One pound of water is equal to approximately 0.12 US gallons.

Does 8 pounds equal 1 gallon?

No, 8 pounds does not equal 1 gallon. One US gallon of water weighs approximately 8.34 pounds.

How many lbs. are 5 gallons of water?

Five US gallons of water weigh approximately 41.7 pounds.

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