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Weight of Water


An online weight of water calculator finds how much water weighs given a certain volume. It factors in liquid water density and volume to compute the water’s weight. Our liquid weight calculator takes into account volume and density to calculate the weight of water per gallon.


To find the weight of the water, start by using the density of water and the volume of the water in liters. 

Multiply the volume of water in liters by the density to get the weight of the water. 

  • Weight = volume * density

The weight of the water can be found given the density which is mass per unit volume. 

  • Density = Mass / Volume

Volume is the product of the length, width, and depth. The volume formula considered in the weight of the water is as follows:

  • Volume = length * width * depth

You can use our volume calculator to convert the number in volume in liters.


The weight of the volume of water depends upon the temperature at which it is stored. 

  • Hot water has less weight because it expands when hot.
  • Cold water has more weight because it is more dense. 

The water reaches its highest density near the freezing point. As it begins to freeze, it starts to expand and becomes less dense again.

How To Calculate The Weight Of Water?

Our weight in water calculator makes your calculation process quick and efficient. Calculate weight of water using the relationship between mass, volume, and density. Let’s take a look at the example below. 


Let’s calculate weight of water having a volume of 250 ml!

Step # 1: 

Convert the volume into liters 

Volume = 250 / 1000 = 0.25 L

Step # 2: 

A density of 1kg per liter calculates the weight of 0.25 L of water 

Weight = 0.25 * 1kg/liter = 0.25kg 

Convert 0.25 kg to grams 

0.25 * 1000 = 250 g 

1 gram of water is equal to 0.035274 ounces. So for getting the answer in ounces, simply multiply the ounces by the water weight in grams. 

Weight in ounces = 250g * 0.035274

Weight in ounces = 8.8185 ounces 

1 kg of water is 2.20462 pounds, we say that 1 gram of water is equal to 0.00220462 pounds. Now we convert our calculation into pounds. Just multiply pounds by the weight in grams.

Weight in pounds = 250g * 0.00220462 pounds 

                                          = 0.56155 pounds 

Working of Water Weight Calculator: 

Our mass of water calculator has a user-friendly interface and allows you to enter the following inputs to get accurate results:


  • Select the water weight unit and enter the volume 
  • Choose the temperature from the designated field 
  • Tap “calculate”


Our weight of water calculator determines the following results:

  • Water weight per gallon within the volume 
  • Conversion of weight in grams, ounces, pounds, and kilograms.

Water’s Weight At Standard Sea Level:

Temperature(°C) Specific weight (kN/m3)
0 9.805
5 9.807
10 9.804
15 9.798
20 9.789
25 9.777
30 9.765
40 9.731
50 9.690
60 9.642
70 9.589
80 9.530
90 9.467
100 9.399


How Much Weight Of 1 Cup Of Water In Grams?

One cup of water contains about 236 grams or 0.52028218695 Pounds. You could also check with the assistance of our best weight of water calculator.

How Many Pounds Are In 1 Gallon of Water Weight?

The gallon of water weight at room temperature is 8.34 lbs. And if we consider how much 5 gallons of water weigh 8.34lbs * 5 we get the value of 5 gallons of water weight.

How Much Weight of 1 Cubic Foot of Water?

1 cubic meter of water weighs 1000 kilograms and 1 cubic foot of water weighs 62.42796 pounds.

How Much Water Weight Can You Lose In A Day?

You can lose five pounds of water in a day. The average 24-hour urine loss is about 1.8 - 4.4 pounds because is heavy.  By contrast, it’s impossible to burn off a pound of fat in a day.

Weight Of Water For Different Volumes:

Volume Weight (oz) Weight (lb) Weight (g) Weight (kg)
1 teaspoon 0.1739 oz 0.0109 lb 4.929 g 0.004929 kg
1 tablespoon 0.5216 oz 0.0326 lb 14.787 g 0.0148 kg
1 cup 8.345 oz 0.5216 lb 236.59 g 0.2366 kg
1 pint 16.691 oz 1.043 lb 473.18 g 0.4732 kg
1 quart 33.382 oz 2.086 lb 946.35 g 0.9464 kg
1 gallon 133.53 oz 8.345 lb 3,785.4 g 3.785 kg
1 milliliter 0.0353 oz 0.002205 lb 1 g 0.001 kg
1 liter 35.274 oz 2.205 lb 1,000 g 1 kg
1 cubic inch 0.578 oz 0.0361 lb 16.387 g 0.0164 kg
1 cubic foot 998.85 oz 62.428 lb 28,317 g 28.317 kg
1 cubic yard 26,969 oz 1,685.6 lb 764,555 g 764.55 kg
1 cubic centimeter 0.0353 oz 0.002205 lb 1 g 0.001 kg
1 cubic meter 35,274 oz 2,204.6 lb 1,000,000 g 1,000 kg


From the source Wikipedia: Specific weight, Definition, Applications, Specific weight of water.