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. When a scale is not available, a calculator like the one above is a good way to estimate the volume to weight conversion.Īnother useful application of weight and volume conversions is chemistry. The best way to ensure an accurate conversion is to use a scale. The density of dry ingredients can vary for a variety of reasons, such as compaction and clumping. Gallons and kilograms are both commonly used to measure cooking ingredients.įor cooking applications, most chefs suggest measuring dry ingredients by weight rather than volume to improve accuracy in the measurements. Kilograms = 5 gal × 3.7854 × 0.7 g/mL = 13.2489 kg When to Convert Gallons to Kilograms Thus, the weight in kilograms is equal to the volume in gallons multiplied by 3.7854 times the density (in g/mL) of the ingredient, substance, or material. If the density is given in grams per milliliter (g/mL), then first multiply the density by 3.7854 to convert to kg/gal.įor a density given in g/mL, you can use this simple formula to convert: Note that in order for this to work, the density must be in kilograms per gallon (kg/gal). To convert a measurement in gallons to kilograms, multiply the volume by the density of the ingredient or material. Therefore, to convert between gallons and kilograms of an ingredient or substance, we must either multiply or divide by its density, depending on which direction we are performing the conversion. In this case, we need to account for the density of the substance whenever we do a conversion. Since gallons are a unit of volume and kilograms are a unit of mass, which are different physical quantities, we need to know one more physical quantity of the ingredient or substance to convert between them.

He specializes in math, science, and astrophysics. Ethan has a PhD in astrophysics and is currently a satellite imaging scientist.

Density of water in gl