Enter the grams of water (g) into the Calculator. The calculator will evaluate the Gallons from Grams of Water. 

Gallons from Grams of Water Formula

GAL = G/3785.41


  • GAL is the Gallons from Grams of Water (gallons)
  • G is the grams of water (g)

To calculate Gallons from Grams of Water, divide the grams of water by 3785.1

How to Calculate Gallons from Grams of Water?

The following steps outline how to calculate the Gallons from Grams of Water.

  1. First, determine the grams of water (g). 
  2. Next, gather the formula from above = GAL = G/3785.41.
  3. Finally, calculate the Gallons from Grams of Water.
  4. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

grams of water (g) = 4000


How do you convert grams of water to liters?

To convert grams of water to liters, use the conversion factor that 1 gram of water is approximately equal to 0.001 liters. Therefore, divide the number of grams by 1000.

What is the significance of using 3785.41 as the conversion factor in the formula?

The number 3785.41 is used as the conversion factor because it represents the number of grams in one gallon of water, allowing for the conversion between grams and gallons.

Can this formula be used for substances other than water?

No, this specific formula is designed for converting grams of water to gallons, as the density of water is unique. Other substances may require different conversion factors based on their densities.

Is there a difference in the conversion factor between US gallons and UK gallons?

Yes, there is a difference. The conversion factor provided is for US gallons. For UK gallons, the conversion factor would differ due to the difference in volume between the two measurements of gallons.