Cups to Kilograms Conversion Calculator

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

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1 c = 0.236588236485 kg
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How to Convert Cups to Kilograms

To convert a cup measurement to a kilogram measurement, divide the volume multiplied by the density of the ingredient or material by 4.226753.

You can use this simple formula to convert:

kilograms = cups × ingredient density / 4.226753

Thus, the volume in kilograms is equal to the cups times the density of the ingredient or material divided by 4.226753.

For example, here's how to convert 5 cups to kilograms for an ingredient with a density of 0.7 g/mL.
5 c = 5 × 0.7 / 4.226753 = 0.828058827698 kg

Cups 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.

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.


The cup is a unit of volume equal to 16 tablespoons or 8 fluid ounces. The cup should not be confused with the metric cup or the teacup, which are different units of volume. One cup is equal to just under 236.6 milliliters, but in nutrition labeling, one cup is equal to 240 milliliters.[2]

The cup is a US customary unit of volume. Cups can be abbreviated as c, and are also sometimes abbreviated as C. For example, 1 cup can be written as 1 c or 1 C.


The 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 roughly equal to the mass of 1,000 cubic centimeters of water.

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

Cup to Kilogram Conversion Table

Cup measurements converted to kilograms for commonly used ingredients.
Volume in Cups: Weight in Kilograms of:
Water Milk Cooking Oil All Purpose Flour Granulated Sugar
1/8 c 0.029574 kg 0.030461 kg 0.026025 kg 0.015644 kg 0.025 kg
1/4 c 0.059147 kg 0.060921 kg 0.052049 kg 0.031289 kg 0.05 kg
1/3 c 0.078863 kg 0.081229 kg 0.069399 kg 0.041718 kg 0.066667 kg
1/2 c 0.118294 kg 0.121843 kg 0.104099 kg 0.062578 kg 0.1 kg
2/3 c 0.157725 kg 0.162457 kg 0.138798 kg 0.083437 kg 0.133333 kg
3/4 c 0.177441 kg 0.182764 kg 0.156148 kg 0.093866 kg 0.15 kg
1 c 0.236588 kg 0.243686 kg 0.208198 kg 0.125155 kg 0.2 kg


  1. National Institute of Standards & Technology, Metric Cooking Resources,
  2. U.S. Food & Drug Administration, Guidance for Industry: Guidelines for Determining Metric Equivalents of Household Measures,
  3. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019,

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