Quarts to Milligrams Conversion Calculator

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

Results in Milligrams:
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1 qt = 946,352.94599999 mg
946.352946 g

How to Convert Quarts to Milligrams

Scales are used to measure weight

To convert a quart measurement to a milligram measurement, multiply the volume by 946,352.946 times the density of the ingredient or material.

You can use this simple formula to convert:

milligrams = quarts × 946,352.946 × ingredient density

Thus, the volume in milligrams is equal to the quarts multiplied by 946,352.946 times the density of the ingredient or material.

For example, here's how to convert 5 quarts to milligrams for an ingredient with a density of 0.7 g/mL.
5 qt = 5 × 946,352.946 × 0.7 = 3,312,235.311 mg

Quarts and milligrams 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.

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.

Keep reading to learn more about each unit of measure.

How Many Milligrams are in a Quart?

The actual weight of a quart will vary depending on the density of the material. The table below shows how many milligrams of various wet and dry ingredients are in a quart.

Quart measurements converted to milligrams for commonly used ingredients.
Volume in Quarts: Weight in Milligrams of:
Water Milk Cooking Oil All Purpose Flour Granulated Sugar
1/8 qt 118,294 mg 123,026 mg 104,099 mg 62,578 mg 82,806 mg
1/4 qt 236,588 mg 246,052 mg 208,198 mg 125,155 mg 165,612 mg
1/3 qt 315,451 mg 328,069 mg 277,597 mg 166,874 mg 220,816 mg
1/2 qt 473,176 mg 492,104 mg 416,395 mg 250,310 mg 331,224 mg
2/3 qt 630,902 mg 656,138 mg 555,194 mg 333,747 mg 441,631 mg
3/4 qt 709,765 mg 738,155 mg 624,593 mg 375,466 mg 496,835 mg
1 qt 946,353 mg 984,207 mg 832,791 mg 500,621 mg 662,447 mg


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.

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.


The milligram is the mass equal to 1/1,000 of a gram, or 0.0154 grains.

The milligram, or milligramme, is an SI unit of weight in the metric system. In the metric system, "milli" is the prefix for 10-3. Milligrams can be abbreviated as mg; for example, 1 milligram can be written as 1 mg.


  1. National Institute of Standards & Technology, Metric Cooking Resources, https://www.nist.gov/pml/weights-and-measures/metric-cooking-resources