Fluid Ounces to Ounces Conversion Calculator
Enter the volume in fluid ounces below to calculate the weight in ounces.
Result: Ounces
Do you want to convert ounces to fluid ounces?
On this page:
Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.
How to Convert Fluid Ounces to Ounces
Since fluid ounces are a unit of volume and ounces 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 fluid ounces and ounces of an ingredient or substance, we must either multiply or divide by its density, depending on which direction we are performing the conversion.
While they sound like they might be related, fluid ounces and ounces are actually very different. Fluid ounces are a measure of liquid volume, as the name implies, and ounces are a measure of the weight of a solid object.
These units are also measured differently. To get a measurement in fluid ounces, you might use a measuring cup to measure the volume of liquid it holds, while to get a measurement in ounces, you might use a scale.
Although they're different, you can convert from one measurement to the other using a conversion formula.
Fluid Ounces to Ounces Formula
To convert a measurement in fluid ounces to ounces, multiply the volume by the density of the ingredient or material. Note that in order for this to work, the density must be in ounces per fluid ounce (oz/fl oz).
If the density is given in grams per milliliter (g/mL), then first multiply the density by 1.0432 to convert to oz/fl oz.
For a density given in g/mL, you can use this simple formula to convert:
ounces = fluid ounces × 1.0432 × density
Thus, the weight in ounces is equal to the volume in fluid ounces multiplied by 1.0432 times the density (in g/mL) of the ingredient, substance, or material.
For example, here's how to convert 5 fluid ounces to ounces for an ingredient with a density of 0.7 g/mL.
ounces = 5 fl oz × 1.0432 × 0.7 g/mL = 3.6511 oz
How Many Ounces Are in a Fluid Ounce?
The actual weight of a fluid ounce will vary depending on the material's density. The conversion table below shows how many ounces of various wet and dry ingredients are in a fluid ounce.
| Volume in Fluid Ounces: | Weight in Ounces of: | ||||
|---|---|---|---|---|---|
| Water | Milk | Cooking Oil | All Purpose Flour | Granulated Sugar | |
| 1 fl oz | 1.043 oz | 1.074 oz | 0.918 oz | 0.552 oz | 0.882 oz |
| 2 fl oz | 2.086 oz | 2.149 oz | 1.836 oz | 1.104 oz | 1.764 oz |
| 3 fl oz | 3.13 oz | 3.223 oz | 2.754 oz | 1.656 oz | 2.646 oz |
| 4 fl oz | 4.173 oz | 4.298 oz | 3.672 oz | 2.207 oz | 3.527 oz |
| 5 fl oz | 5.216 oz | 5.372 oz | 4.59 oz | 2.759 oz | 4.409 oz |
| 6 fl oz | 6.259 oz | 6.447 oz | 5.508 oz | 3.311 oz | 5.291 oz |
| 7 fl oz | 7.302 oz | 7.521 oz | 6.426 oz | 3.863 oz | 6.173 oz |
| 8 fl oz | 8.345 oz | 8.596 oz | 7.344 oz | 4.415 oz | 7.055 oz |
| 9 fl oz | 9.389 oz | 9.67 oz | 8.262 oz | 4.967 oz | 7.937 oz |
| 10 fl oz | 10.43 oz | 10.75 oz | 9.18 oz | 5.518 oz | 8.818 oz |
| 11 fl oz | 11.48 oz | 11.82 oz | 10.1 oz | 6.07 oz | 9.7 oz |
| 12 fl oz | 12.52 oz | 12.89 oz | 11.02 oz | 6.622 oz | 10.58 oz |
| 13 fl oz | 13.56 oz | 13.97 oz | 11.93 oz | 7.174 oz | 11.46 oz |
| 14 fl oz | 14.6 oz | 15.04 oz | 12.85 oz | 7.726 oz | 12.35 oz |
| 15 fl oz | 15.65 oz | 16.12 oz | 13.77 oz | 8.278 oz | 13.23 oz |
| 16 fl oz | 16.69 oz | 17.19 oz | 14.69 oz | 8.829 oz | 14.11 oz |
| 17 fl oz | 17.73 oz | 18.27 oz | 15.61 oz | 9.381 oz | 14.99 oz |
| 18 fl oz | 18.78 oz | 19.34 oz | 16.52 oz | 9.933 oz | 15.87 oz |
| 19 fl oz | 19.82 oz | 20.42 oz | 17.44 oz | 10.49 oz | 16.76 oz |
| 20 fl oz | 20.86 oz | 21.49 oz | 18.36 oz | 11.04 oz | 17.64 oz |
When to Convert Fluid Ounces to Ounces
Fluid ounces and ounces 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]
Keep reading to learn more about each unit of measure.
What Is a Fluid Ounce?
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 just an "ounce" but should not be confused with the unit of weight. One fluid ounce is equal to approximately 29.5735 milliliters, but in nutrition labeling, one fluid ounce is rounded to exactly 30 milliliters.[3]
The fluid ounce is a US customary unit of volume. Fluid ounces can be abbreviated as fl oz, and are also sometimes abbreviated as oz fl. For example, 1 fluid ounce can be written as 1 fl oz or 1 oz fl.
Learn more about fluid ounces.
What Is an Ounce?
One ounce is a unit of mass/weight equal to 1/16 of a pound or 28.349523 grams. The common ounce should not be confused with the troy ounce, which is equal to 1/12 of a troy pound.[4]
The ounce is a US customary and imperial unit of mass. Ounces can be abbreviated as oz; for example, 1 ounce can be written as 1 oz.
An ounce is also frequently referred to as a unit of weight. While technically, an ounce 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 ounce weighs 1 ounce on Earth, but only weighs one-sixth of that on the moon, yet still has the same mass.
Learn more about ounces.
References
- National Institute of Standards & Technology, Culinary Measurement Tips, https://www.nist.gov/pml/owm/culinary-measurement-tips
- 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
- 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
- James Bucki, Troy Ounce vs. Ounce, The Spruce, https://www.thesprucecrafts.com/troy-ounce-vs-ounce-4588158