Pounds to Quarts Conversion Calculator

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1 lb = 0.479305709268 qt

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How to Convert Pounds to Quarts

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Since pounds are a unit of mass and quarts 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 quarts 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 Quarts Formula

To convert a measurement in pounds to quarts, 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 quart (lb/qt).

If the density is given in grams per milliliter (g/mL), then first multiply the density by 2.0864 to convert to lb/qt.

For a density given in g/mL, you can use this simple formula to convert:

quarts = pounds2.0864 × density

Thus, the volume in quarts is equal to the weight in pounds divided by 2.0864 times the density (in g/mL) of the ingredient, substance, or material.

For example, here's how to convert 5 pounds to quarts for an ingredient with a density of 0.7 g/mL.
quarts = 5 lb2.0864 × 0.7 g/mL = 3.4236 qt

When to Convert Pounds to Quarts

Pounds and quarts 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 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.[3]

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.[4]

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 Quart?

The US liquid quart is a unit of fluid volume equal to one fourth of a gallon, two pints, or four cups.

The liquid quart should not be confused with the dry quart (US) or the imperial quart, which are different units. However, when someone refers to a volume in quarts, they typically mean the US liquid quart.

The quart is a US customary unit of volume. Quarts can be abbreviated as qt; for example, 1 quart can be written as 1 qt.

Learn more about quarts.

Pound to Quart Conversion Table

Pound measurements converted to quarts for commonly used cooking and baking ingredients.
Weight in Pounds: Volume in Quarts of:
Water Milk Cooking Oil All Purpose Flour Granulated Sugar
1 lb 0.479306 qt 0.465345 qt 0.544666 qt 0.90606 qt 0.56699 qt
2 lb 0.958611 qt 0.930691 qt 1.0893 qt 1.8121 qt 1.134 qt
3 lb 1.4379 qt 1.396 qt 1.634 qt 2.7182 qt 1.701 qt
4 lb 1.9172 qt 1.8614 qt 2.1787 qt 3.6242 qt 2.268 qt
5 lb 2.3965 qt 2.3267 qt 2.7233 qt 4.5303 qt 2.835 qt
6 lb 2.8758 qt 2.7921 qt 3.268 qt 5.4364 qt 3.4019 qt
7 lb 3.3551 qt 3.2574 qt 3.8127 qt 6.3424 qt 3.9689 qt
8 lb 3.8344 qt 3.7228 qt 4.3573 qt 7.2485 qt 4.5359 qt
9 lb 4.3138 qt 4.1881 qt 4.902 qt 8.1545 qt 5.1029 qt
10 lb 4.7931 qt 4.6535 qt 5.4467 qt 9.0606 qt 5.6699 qt
11 lb 5.2724 qt 5.1188 qt 5.9913 qt 9.9667 qt 6.2369 qt
12 lb 5.7517 qt 5.5841 qt 6.536 qt 10.87 qt 6.8039 qt
13 lb 6.231 qt 6.0495 qt 7.0807 qt 11.78 qt 7.3709 qt
14 lb 6.7103 qt 6.5148 qt 7.6253 qt 12.68 qt 7.9379 qt
15 lb 7.1896 qt 6.9802 qt 8.17 qt 13.59 qt 8.5049 qt
16 lb 7.6689 qt 7.4455 qt 8.7146 qt 14.5 qt 9.0718 qt
17 lb 8.1482 qt 7.9109 qt 9.2593 qt 15.4 qt 9.6388 qt
18 lb 8.6275 qt 8.3762 qt 9.804 qt 16.31 qt 10.21 qt
19 lb 9.1068 qt 8.8416 qt 10.35 qt 17.22 qt 10.77 qt
20 lb 9.5861 qt 9.3069 qt 10.89 qt 18.12 qt 11.34 qt
21 lb 10.07 qt 9.7723 qt 11.44 qt 19.03 qt 11.91 qt
22 lb 10.54 qt 10.24 qt 11.98 qt 19.93 qt 12.47 qt
23 lb 11.02 qt 10.7 qt 12.53 qt 20.84 qt 13.04 qt
24 lb 11.5 qt 11.17 qt 13.07 qt 21.75 qt 13.61 qt
25 lb 11.98 qt 11.63 qt 13.62 qt 22.65 qt 14.17 qt
26 lb 12.46 qt 12.1 qt 14.16 qt 23.56 qt 14.74 qt
27 lb 12.94 qt 12.56 qt 14.71 qt 24.46 qt 15.31 qt
28 lb 13.42 qt 13.03 qt 15.25 qt 25.37 qt 15.88 qt
29 lb 13.9 qt 13.5 qt 15.8 qt 26.28 qt 16.44 qt
30 lb 14.38 qt 13.96 qt 16.34 qt 27.18 qt 17.01 qt
31 lb 14.86 qt 14.43 qt 16.88 qt 28.09 qt 17.58 qt
32 lb 15.34 qt 14.89 qt 17.43 qt 28.99 qt 18.14 qt
33 lb 15.82 qt 15.36 qt 17.97 qt 29.9 qt 18.71 qt
34 lb 16.3 qt 15.82 qt 18.52 qt 30.81 qt 19.28 qt
35 lb 16.78 qt 16.29 qt 19.06 qt 31.71 qt 19.84 qt
36 lb 17.26 qt 16.75 qt 19.61 qt 32.62 qt 20.41 qt
37 lb 17.73 qt 17.22 qt 20.15 qt 33.52 qt 20.98 qt
38 lb 18.21 qt 17.68 qt 20.7 qt 34.43 qt 21.55 qt
39 lb 18.69 qt 18.15 qt 21.24 qt 35.34 qt 22.11 qt
40 lb 19.17 qt 18.61 qt 21.79 qt 36.24 qt 22.68 qt

References

  1. National Institute of Standards & Technology, Culinary Measurement Tips, https://www.nist.gov/pml/owm/culinary-measurement-tips
  2. 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
  3. 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
  4. Encyclopædia Britannica, Avoirdupois weight, https://www.britannica.com/science/avoirdupois-weight

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