Fluid Ounces to Kilograms Conversion Calculator

Enter the volume in fluid ounces below to calculate the weight in kilograms.

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1 fl oz = 0.029573529563 kg

How to Convert Fluid Ounces to Kilograms

Scales are used to measure weight

To convert a fluid ounce measurement to a kilogram measurement, divide the volume multiplied by the density of the ingredient or material by 33.814023.

You can use this simple formula to convert:

kilograms = fluid ounces × ingredient density33.814023

Thus, the volume in kilograms is equal to the fluid ounces times the density of the ingredient or material divided by 33.814023.

For example, here's how to convert 5 fluid ounces to kilograms for an ingredient with a density of 0.7 g/mL.
5 fl oz = 5 × 0.733.814023 = 0.103507353469 kg

Fluid ounces 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.

Fluid Ounces

The US fluid ounce is a unit of volume equal to 1/16 of a pint or 1/8 of a cup. The fluid ounce is sometimes referred to as an "ounce" but should not be confused with the unit of mass. One fluid ounce is equal to just under 29.6 milliliters, but in nutrition labeling, one fluid ounce is rounded to exactly 30 milliliters.[2]

The fluid ounce is a US customary unit of volume. Fluid ounces can be abbreviated as fl oz, and are also sometimes abbreviated as fl. oz. or oz. fl.. For example, 1 fluid ounce can be written as 1 fl oz, 1 fl. oz., or 1 oz. fl..

Kilograms

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.

Fluid Ounce to Kilogram Conversion Table

Fluid ounce measurements converted to kilograms for commonly used ingredients.
Volume in Fluid Ounces: Weight in Kilograms of:
Water Milk Cooking Oil All Purpose Flour Granulated Sugar
1 fl oz 0.029574 kg 0.030756 kg 0.026025 kg 0.015644 kg 0.020701 kg
2 fl oz 0.059147 kg 0.061513 kg 0.052049 kg 0.031289 kg 0.041403 kg
3 fl oz 0.088721 kg 0.092269 kg 0.078074 kg 0.046933 kg 0.062104 kg
4 fl oz 0.118294 kg 0.123026 kg 0.104099 kg 0.062578 kg 0.082806 kg
5 fl oz 0.147868 kg 0.153782 kg 0.130124 kg 0.078222 kg 0.103507 kg
6 fl oz 0.177441 kg 0.184539 kg 0.156148 kg 0.093866 kg 0.124209 kg
7 fl oz 0.207015 kg 0.215295 kg 0.182173 kg 0.109511 kg 0.14491 kg
8 fl oz 0.236588 kg 0.246052 kg 0.208198 kg 0.125155 kg 0.165612 kg
9 fl oz 0.266162 kg 0.276808 kg 0.234222 kg 0.1408 kg 0.186313 kg
10 fl oz 0.295735 kg 0.307565 kg 0.260247 kg 0.156444 kg 0.207015 kg
11 fl oz 0.325309 kg 0.338321 kg 0.286272 kg 0.172088 kg 0.227716 kg
12 fl oz 0.354882 kg 0.369078 kg 0.312296 kg 0.187733 kg 0.248418 kg
13 fl oz 0.384456 kg 0.399834 kg 0.338321 kg 0.203377 kg 0.269119 kg
14 fl oz 0.414029 kg 0.430591 kg 0.364346 kg 0.219022 kg 0.289821 kg
15 fl oz 0.443603 kg 0.461347 kg 0.390371 kg 0.234666 kg 0.310522 kg
16 fl oz 0.473176 kg 0.492104 kg 0.416395 kg 0.25031 kg 0.331224 kg
17 fl oz 0.50275 kg 0.52286 kg 0.44242 kg 0.265955 kg 0.351925 kg
18 fl oz 0.532324 kg 0.553616 kg 0.468445 kg 0.281599 kg 0.372626 kg
19 fl oz 0.561897 kg 0.584373 kg 0.494469 kg 0.297244 kg 0.393328 kg
20 fl oz 0.591471 kg 0.615129 kg 0.520494 kg 0.312888 kg 0.414029 kg
21 fl oz 0.621044 kg 0.645886 kg 0.546519 kg 0.328532 kg 0.434731 kg
22 fl oz 0.650618 kg 0.676642 kg 0.572544 kg 0.344177 kg 0.455432 kg
23 fl oz 0.680191 kg 0.707399 kg 0.598568 kg 0.359821 kg 0.476134 kg
24 fl oz 0.709765 kg 0.738155 kg 0.624593 kg 0.375466 kg 0.496835 kg
25 fl oz 0.739338 kg 0.768912 kg 0.650618 kg 0.39111 kg 0.517537 kg
26 fl oz 0.768912 kg 0.799668 kg 0.676642 kg 0.406754 kg 0.538238 kg
27 fl oz 0.798485 kg 0.830425 kg 0.702667 kg 0.422399 kg 0.55894 kg
28 fl oz 0.828059 kg 0.861181 kg 0.728692 kg 0.438043 kg 0.579641 kg
29 fl oz 0.857632 kg 0.891938 kg 0.754716 kg 0.453688 kg 0.600343 kg
30 fl oz 0.887206 kg 0.922694 kg 0.780741 kg 0.469332 kg 0.621044 kg
31 fl oz 0.916779 kg 0.953451 kg 0.806766 kg 0.484976 kg 0.641746 kg
32 fl oz 0.946353 kg 0.984207 kg 0.832791 kg 0.500621 kg 0.662447 kg
33 fl oz 0.975926 kg 1.015 kg 0.858815 kg 0.516265 kg 0.683149 kg
34 fl oz 1.0055 kg 1.0457 kg 0.88484 kg 0.53191 kg 0.70385 kg
35 fl oz 1.0351 kg 1.0765 kg 0.910865 kg 0.547554 kg 0.724551 kg
36 fl oz 1.0646 kg 1.1072 kg 0.936889 kg 0.563198 kg 0.745253 kg
37 fl oz 1.0942 kg 1.138 kg 0.962914 kg 0.578843 kg 0.765954 kg
38 fl oz 1.1238 kg 1.1687 kg 0.988939 kg 0.594487 kg 0.786656 kg
39 fl oz 1.1534 kg 1.1995 kg 1.015 kg 0.610131 kg 0.807357 kg
40 fl oz 1.1829 kg 1.2303 kg 1.041 kg 0.625776 kg 0.828059 kg

References

  1. National Institute of Standards & Technology, Metric Cooking Resources, https://www.nist.gov/pml/weights-and-measures/metric-cooking-resources
  2. U.S. Food & Drug Administration, Guidance for Industry: Guidelines for Determining Metric Equivalents of Household Measures, https://www.fda.gov/regulatory-information/search-fda-guidance-documents/guidance-industry-guidelines-determining-metric-equivalents-household-measures
  3. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/utils/common/pdf/si-brochure/SI-Brochure-9.pdf