Quarts to Kilograms Conversion Calculator

Enter the volume in quarts below to calculate the weight in kilograms.

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1 qt = 0.946352946 kg

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How to Convert Quarts to Kilograms

Since quarts 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. In this case, we need to account for the density of the substance whenever we do a conversion.

Therefore, to convert between quarts 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.

Quarts to Kilograms Formula

To convert a measurement in quarts to kilograms, multiply the volume by the density of the ingredient, substance, or material. Note that in order for this to work, the density must be in kilograms per quart (kg/qt).

If the density is given in grams per milliliter (g/mL), then first divide the density by 1.0567 to convert to kg/qt.

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

kilograms = quarts × density / 1.0567

Thus, the weight in kilograms is equal to the volume in quarts times the density (in g/mL) of the ingredient or material divided by 1.0567.

For example, here's how to convert 5 quarts to kilograms for an ingredient with a density of 0.7 g/mL.
kilograms = 5 qt × 0.7 g/mL / 1.0567 = 3.3122 kg

When to Convert Quarts to Kilograms

Quarts and kilograms 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 volume to weight 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 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.

What Is a Kilogram?

One kilogram is equal to 1,000 grams, 2.204623 pounds, or 1/1,000 of a metric ton.

The formal definition of the kilogram changed in 2019. One kilogram was previously equal to the mass of the platinum-iridium bar, known as the International Prototype of the Kilogram, which was stored in Sèvres, France.

The 2019 SI brochure now defines the kilogram using the Planck constant, and it is defined using the meter and second.[3] It is equal to the mass of 1,000 cubic centimeters, or milliliters, of water.

The kilogram, or kilogramme, is the SI base unit for mass and is also a multiple of the gram. In the metric system, "kilo" is the prefix for thousands, or 103. Kilograms can be abbreviated as kg; for example, 1 kilogram can be written as 1 kg.

A kilogram is also frequently referred to as a unit of weight. While technically, a kilogram 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 kilogram weighs 1 kilogram on Earth, but only weighs one-sixth of that on the moon, yet still has the same mass.

Learn more about kilograms.

Quart to Kilogram Conversion Table

Quart measurements converted to kilograms for commonly used cooking and baking ingredients.
Volume in Quarts: Weight in Kilograms of:
Water Milk Cooking Oil All Purpose Flour Granulated Sugar
1/8 qt 0.118294 kg 0.121843 kg 0.104099 kg 0.062578 kg 0.1 kg
1/4 qt 0.236588 kg 0.243686 kg 0.208198 kg 0.125155 kg 0.2 kg
1/3 qt 0.315451 kg 0.324915 kg 0.277597 kg 0.166874 kg 0.266667 kg
1/2 qt 0.473176 kg 0.487372 kg 0.416395 kg 0.25031 kg 0.4 kg
2/3 qt 0.630902 kg 0.649829 kg 0.555194 kg 0.333747 kg 0.533333 kg
3/4 qt 0.709765 kg 0.731058 kg 0.624593 kg 0.375466 kg 0.6 kg
1 qt 0.946353 kg 0.974744 kg 0.832791 kg 0.500621 kg 0.8 kg

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. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf

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