Grams to Gallons Conversion Calculator
Enter the weight in grams below to calculate the volume in gallons.
Result: Gallons
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How to Convert Grams to Gallons
Since grams are a unit of mass and gallons are a unit of volume, which are different physical quantities, we need to know one more physical quantity of the ingredient or substance to convert between them. In this case, we need to account for the density of the substance whenever we do a conversion.
Therefore, to convert between grams and gallons of an ingredient or substance, we must either multiply or divide by its density, depending on which direction we are performing the conversion.
Grams to Gallons Formula
To convert a measurement in grams to gallons, divide the weight by the density of the ingredient or material. Note that in order for this to work, the density must be in grams per gallon (g/gal).
If the density is given in grams per milliliter (g/mL), then first multiply the density by 3,785.412 to convert to g/gal.
For a density given in g/mL, you can use this simple formula to convert:
gallons = grams / 3,785.412 × density
Thus, the volume in gallons is equal to the weight in grams divided by 3,785.412 times the density (in g/mL) of the ingredient, substance, or material.
For example, here's how to convert 5,000 grams to gallons for an ingredient with a density of 0.7 g/mL.
gallons = 5,000 g / 3,785.412 × 0.7 g/mL = 1.8869 gal
Gram to Gallon Conversion Table
| Weight in Grams: | Volume in Gallons of: | ||||
|---|---|---|---|---|---|
| Water | Milk | Cooking Oil | All Purpose Flour | Granulated Sugar | |
| 250 g | 0.066 gal | 0.064 gal | 0.075 gal | 0.125 gal | 0.078 gal |
| 500 g | 0.132 gal | 0.128 gal | 0.15 gal | 0.25 gal | 0.156 gal |
| 750 g | 0.198 gal | 0.192 gal | 0.225 gal | 0.375 gal | 0.234 gal |
| 1,000 g | 0.264 gal | 0.256 gal | 0.3 gal | 0.499 gal | 0.313 gal |
| 1,250 g | 0.33 gal | 0.321 gal | 0.375 gal | 0.624 gal | 0.391 gal |
| 1,500 g | 0.396 gal | 0.385 gal | 0.45 gal | 0.749 gal | 0.469 gal |
| 1,750 g | 0.462 gal | 0.449 gal | 0.525 gal | 0.874 gal | 0.547 gal |
| 2,000 g | 0.528 gal | 0.513 gal | 0.6 gal | 0.999 gal | 0.625 gal |
| 2,250 g | 0.594 gal | 0.577 gal | 0.675 gal | 1.124 gal | 0.703 gal |
| 2,500 g | 0.66 gal | 0.641 gal | 0.75 gal | 1.248 gal | 0.781 gal |
| 2,750 g | 0.726 gal | 0.705 gal | 0.826 gal | 1.373 gal | 0.859 gal |
| 3,000 g | 0.793 gal | 0.769 gal | 0.901 gal | 1.498 gal | 0.938 gal |
| 3,250 g | 0.859 gal | 0.834 gal | 0.976 gal | 1.623 gal | 1.016 gal |
| 3,500 g | 0.925 gal | 0.898 gal | 1.051 gal | 1.748 gal | 1.094 gal |
| 3,750 g | 0.991 gal | 0.962 gal | 1.126 gal | 1.873 gal | 1.172 gal |
| 4,000 g | 1.057 gal | 1.026 gal | 1.201 gal | 1.998 gal | 1.25 gal |
| 4,250 g | 1.123 gal | 1.09 gal | 1.276 gal | 2.122 gal | 1.328 gal |
| 4,500 g | 1.189 gal | 1.154 gal | 1.351 gal | 2.247 gal | 1.406 gal |
| 4,750 g | 1.255 gal | 1.218 gal | 1.426 gal | 2.372 gal | 1.484 gal |
| 5,000 g | 1.321 gal | 1.282 gal | 1.501 gal | 2.497 gal | 1.563 gal |
When to Convert Grams to Gallons
Grams and gallons are both commonly used to measure cooking ingredients.
For cooking applications, most chefs suggest measuring dry ingredients by weight rather than volume to improve accuracy in the measurements.[1] The density of dry ingredients can vary for a variety of reasons, such as compaction and clumping.
The best way to ensure an accurate conversion is to use a scale. When a scale is not available, a calculator like the one above is a good way to estimate the weight to volume conversion.
Another useful application of weight and volume conversions is chemistry. When performing chemical reactions by combining separate chemicals to produce a new chemical, one must know the exact amount of each chemical to add in order to maximize the yield of the reaction.
It is common to mix powdered chemicals with liquid, or aqueous, chemicals, and this is where it becomes very useful to convert between weights and volumes.[2]
A third application of weight and volume conversions is when shipping freight when calculating the volumetric weight for cargo and packages. Trucks, ships, and airplanes are limited in the amount of weight or volume they can transport, so if one of those quantities is known, but the limitation is on the other, then it becomes necessary to convert between the two so as not to overload the shipping vehicle.
Keep reading to learn more about each unit of measure.
What Is a Gram?
A gram is a unit of mass equal to 1/1,000 of a kilogram or 0.035274 ounces, and is equivalent to the mass of one cubic centimeter, or one milliliter, of water.
The gram, or gramme, is an SI unit of mass in the metric system. Grams can be abbreviated as g; for example, 1 gram can be written as 1 g.
A gram is frequently referred to as a unit of weight. While technically, a gram is a measure of mass, and weight is actually a measure of force, the two are equivalent as long as we are performing our calculations on Earth.
For example, an object with a mass of 1 gram weighs 1 gram on Earth, but only weighs one-sixth of that on the moon, yet still has the same mass.
Learn more about grams.
What Is a Gallon?
The US liquid gallon is a unit of fluid volume equal to four quarts, eight pints, or sixteen cups.[3] The US liquid gallon should not be confused with the US dry gallon or the imperial gallon, which are different units of measure.
The gallon is a US customary unit of volume. Gallons can be abbreviated as gal; for example, 1 gallon can be written as 1 gal.
Learn more about gallons.
References
- National Institute of Standards & Technology, Culinary Measurement Tips, https://www.nist.gov/pml/owm/culinary-measurement-tips
- CK-12 Foundation, Introductory Chemistry (CK-12) - 12.6: Mass-Volume Stoichiometry, https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/12%3A_Stoichiometry/12.06%3A_Mass-Volume_Stoichiometry
- National Institute of Standards and Technology, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Handbook 44 - 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.44-2019.pdf