Pounds to Gallons Conversion Calculator
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How to Convert Pounds to Gallons
Since pounds 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 pounds 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.
Pounds to Gallons Formula
To convert a measurement in pounds 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 pounds per gallon (lb/gal).
If the density is given in grams per milliliter (g/mL), then first multiply the density by 8.3454 to convert to lb/gal.
For a density given in g/mL, you can use this simple formula to convert:
Thus, the volume in gallons is equal to the weight in pounds divided by 8.3454 times the density (in g/mL) of the ingredient, substance, or material.
When to Convert Pounds to Gallons
Pounds 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. 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.
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 Pound?
Pounds are a widely used unit of weight in the United States. The National Bureau of Standards approved the international definition of the pound for use in the United States in 1959 after an agreement between six nations referred to as the International Yard and Pound Agreement.
One pound is equal to 16 ounces, or 0.45359237 kilograms. In the avoirdupois or apothecaries' systems, one pound is equal to 7,000 grains.
The pound is a US customary and imperial unit of mass. A pound is sometimes also referred to as a common ounce. Pounds can be abbreviated as lb (plural lbs), and are also sometimes abbreviated as lbm or #. For example, 1 pound can be written as 1 lb, 1 lbm, or 1 #, and 2 pounds can be written as 2 lbs.
A pound is frequently referred to as a unit of weight. While technically, a pound 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 pound weighs 1 pound on Earth, but only weighs one-sixth of that on the moon, yet still has the same mass.
Learn more about pounds.
What is a Gallon?
The US liquid gallon is a unit of fluid volume equal to four quarts, eight pints, or sixteen cups. 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.
Pound to Gallon Conversion Table
|Weight in Pounds:||Volume in Gallons of:|
|Water||Milk||Cooking Oil||All Purpose Flour||Granulated Sugar|
|1 lb||0.119826 gal||0.116336 gal||0.136166 gal||0.226515 gal||0.141748 gal|
|2 lb||0.239653 gal||0.232673 gal||0.272333 gal||0.45303 gal||0.283495 gal|
|3 lb||0.359479 gal||0.349009 gal||0.408499 gal||0.679545 gal||0.425243 gal|
|4 lb||0.479306 gal||0.465345 gal||0.544666 gal||0.90606 gal||0.56699 gal|
|5 lb||0.599132 gal||0.581682 gal||0.680832 gal||1.1326 gal||0.708738 gal|
|6 lb||0.718959 gal||0.698018 gal||0.816998 gal||1.3591 gal||0.850486 gal|
|7 lb||0.838785 gal||0.814354 gal||0.953165 gal||1.5856 gal||0.992233 gal|
|8 lb||0.958611 gal||0.930691 gal||1.0893 gal||1.8121 gal||1.134 gal|
|9 lb||1.0784 gal||1.047 gal||1.2255 gal||2.0386 gal||1.2757 gal|
|10 lb||1.1983 gal||1.1634 gal||1.3617 gal||2.2652 gal||1.4175 gal|
|11 lb||1.3181 gal||1.2797 gal||1.4978 gal||2.4917 gal||1.5592 gal|
|12 lb||1.4379 gal||1.396 gal||1.634 gal||2.7182 gal||1.701 gal|
|13 lb||1.5577 gal||1.5124 gal||1.7702 gal||2.9447 gal||1.8427 gal|
|14 lb||1.6776 gal||1.6287 gal||1.9063 gal||3.1712 gal||1.9845 gal|
|15 lb||1.7974 gal||1.745 gal||2.0425 gal||3.3977 gal||2.1262 gal|
|16 lb||1.9172 gal||1.8614 gal||2.1787 gal||3.6242 gal||2.268 gal|
|17 lb||2.037 gal||1.9777 gal||2.3148 gal||3.8508 gal||2.4097 gal|
|18 lb||2.1569 gal||2.0941 gal||2.451 gal||4.0773 gal||2.5515 gal|
|19 lb||2.2767 gal||2.2104 gal||2.5872 gal||4.3038 gal||2.6932 gal|
|20 lb||2.3965 gal||2.3267 gal||2.7233 gal||4.5303 gal||2.835 gal|
|21 lb||2.5164 gal||2.4431 gal||2.8595 gal||4.7568 gal||2.9767 gal|
|22 lb||2.6362 gal||2.5594 gal||2.9957 gal||4.9833 gal||3.1184 gal|
|23 lb||2.756 gal||2.6757 gal||3.1318 gal||5.2098 gal||3.2602 gal|
|24 lb||2.8758 gal||2.7921 gal||3.268 gal||5.4364 gal||3.4019 gal|
|25 lb||2.9957 gal||2.9084 gal||3.4042 gal||5.6629 gal||3.5437 gal|
|26 lb||3.1155 gal||3.0247 gal||3.5403 gal||5.8894 gal||3.6854 gal|
|27 lb||3.2353 gal||3.1411 gal||3.6765 gal||6.1159 gal||3.8272 gal|
|28 lb||3.3551 gal||3.2574 gal||3.8127 gal||6.3424 gal||3.9689 gal|
|29 lb||3.475 gal||3.3738 gal||3.9488 gal||6.5689 gal||4.1107 gal|
|30 lb||3.5948 gal||3.4901 gal||4.085 gal||6.7955 gal||4.2524 gal|
|31 lb||3.7146 gal||3.6064 gal||4.2212 gal||7.022 gal||4.3942 gal|
|32 lb||3.8344 gal||3.7228 gal||4.3573 gal||7.2485 gal||4.5359 gal|
|33 lb||3.9543 gal||3.8391 gal||4.4935 gal||7.475 gal||4.6777 gal|
|34 lb||4.0741 gal||3.9554 gal||4.6297 gal||7.7015 gal||4.8194 gal|
|35 lb||4.1939 gal||4.0718 gal||4.7658 gal||7.928 gal||4.9612 gal|
|36 lb||4.3138 gal||4.1881 gal||4.902 gal||8.1545 gal||5.1029 gal|
|37 lb||4.4336 gal||4.3044 gal||5.0382 gal||8.3811 gal||5.2447 gal|
|38 lb||4.5534 gal||4.4208 gal||5.1743 gal||8.6076 gal||5.3864 gal|
|39 lb||4.6732 gal||4.5371 gal||5.3105 gal||8.8341 gal||5.5282 gal|
|40 lb||4.7931 gal||4.6535 gal||5.4467 gal||9.0606 gal||5.6699 gal|
- National Institute of Standards & Technology, Metric Cooking Resources, https://www.nist.gov/pml/owm/metric-cooking-resources
- 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 Bureau of Standards, Refinement of Values for the Yard and Pound, U.S. Department of Commerce, July 1, 1959, https://www.nist.gov/system/files/documents/2017/05/09/frn-59-5442-1959.pdf
- Encyclopædia Britannica, Avoirdupois weight, https://www.britannica.com/science/avoirdupois-weight
- 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
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