oz to mL Conversion (Ounces to Milliliters)
Enter the weight in ounces below to calculate the volume in milliliters.
Do you want to convert milliliters to ounces?
How to Convert Ounces to Milliliters
Since ounces are a unit of mass and milliliters are a unit of volume, 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 ounces and milliliters of an ingredient or substance, we must either multiply or divide by its density, depending on which direction we are performing the conversion.
Ounces to Milliliters Formula
To convert a measurement in ounces to milliliters, divide the weight by the density of the ingredient or material. Note that in order for this to work, the density must be in ounces per milliliter (oz/mL).
If the density is given in grams per milliliter (g/mL), then first divide 28.3495 by the density to convert to oz/mL.
For a density given in g/mL, you can use this simple formula to convert:
milliliters = ounces × 28.3495 / density
Thus, the volume in milliliters is equal to the weight in ounces times 28.3495 divided by the density of the ingredient, substance, or material.
This formula is for converting ounces in weight, if you're trying to convert a volume measurement in fluid ounces, try our fluid ounces to milliliters calculator.
When to Convert Ounces to Milliliters
Ounces and milliliters 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. 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 weight to volume 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.
Keep reading to learn more about each unit of measure.
How Many Milliliters Are in a Ounce?
The actual volume of a ounce will vary depending on the density of the material. The table below shows how many milliliters of various wet and dry ingredients are in a ounce.
|Weight in Ounces:||Volume in Milliliters of:|
|Water||Milk||Cooking Oil||All Purpose Flour||Granulated Sugar|
|1 oz||28.35 mL||27.52 mL||32.22 mL||53.59 mL||33.54 mL|
|2 oz||56.7 mL||55.05 mL||64.43 mL||107.18 mL||67.07 mL|
|3 oz||85.05 mL||82.57 mL||96.65 mL||160.77 mL||100.61 mL|
|4 oz||113.4 mL||110.1 mL||128.86 mL||214.36 mL||134.14 mL|
|5 oz||141.75 mL||137.62 mL||161.08 mL||267.95 mL||167.68 mL|
|6 oz||170.1 mL||165.14 mL||193.29 mL||321.54 mL||201.21 mL|
|7 oz||198.45 mL||192.67 mL||225.51 mL||375.14 mL||234.75 mL|
|8 oz||226.8 mL||220.19 mL||257.72 mL||428.73 mL||268.29 mL|
|9 oz||255.15 mL||247.71 mL||289.94 mL||482.32 mL||301.82 mL|
|10 oz||283.5 mL||275.24 mL||322.15 mL||535.91 mL||335.36 mL|
|11 oz||311.84 mL||302.76 mL||354.37 mL||589.5 mL||368.89 mL|
|12 oz||340.19 mL||330.29 mL||386.58 mL||643.09 mL||402.43 mL|
|13 oz||368.54 mL||357.81 mL||418.8 mL||696.68 mL||435.97 mL|
|14 oz||396.89 mL||385.33 mL||451.02 mL||750.27 mL||469.5 mL|
|15 oz||425.24 mL||412.86 mL||483.23 mL||803.86 mL||503.04 mL|
|16 oz||453.59 mL||440.38 mL||515.45 mL||857.45 mL||536.57 mL|
|17 oz||481.94 mL||467.9 mL||547.66 mL||911.04 mL||570.11 mL|
|18 oz||510.29 mL||495.43 mL||579.88 mL||964.63 mL||603.64 mL|
|19 oz||538.64 mL||522.95 mL||612.09 mL||1,018 mL||637.18 mL|
|20 oz||566.99 mL||550.48 mL||644.31 mL||1,072 mL||670.72 mL|
|21 oz||595.34 mL||578 mL||676.52 mL||1,125 mL||704.25 mL|
|22 oz||623.69 mL||605.52 mL||708.74 mL||1,179 mL||737.79 mL|
|23 oz||652.04 mL||633.05 mL||740.95 mL||1,233 mL||771.32 mL|
|24 oz||680.39 mL||660.57 mL||773.17 mL||1,286 mL||804.86 mL|
|25 oz||708.74 mL||688.1 mL||805.38 mL||1,340 mL||838.4 mL|
|26 oz||737.09 mL||715.62 mL||837.6 mL||1,393 mL||871.93 mL|
|27 oz||765.44 mL||743.14 mL||869.81 mL||1,447 mL||905.47 mL|
|28 oz||793.79 mL||770.67 mL||902.03 mL||1,501 mL||939 mL|
|29 oz||822.14 mL||798.19 mL||934.25 mL||1,554 mL||972.54 mL|
|30 oz||850.49 mL||825.71 mL||966.46 mL||1,608 mL||1,006 mL|
|31 oz||878.84 mL||853.24 mL||998.68 mL||1,661 mL||1,040 mL|
|32 oz||907.18 mL||880.76 mL||1,031 mL||1,715 mL||1,073 mL|
|33 oz||935.53 mL||908.29 mL||1,063 mL||1,768 mL||1,107 mL|
|34 oz||963.88 mL||935.81 mL||1,095 mL||1,822 mL||1,140 mL|
|35 oz||992.23 mL||963.33 mL||1,128 mL||1,876 mL||1,174 mL|
|36 oz||1,021 mL||990.86 mL||1,160 mL||1,929 mL||1,207 mL|
|37 oz||1,049 mL||1,018 mL||1,192 mL||1,983 mL||1,241 mL|
|38 oz||1,077 mL||1,046 mL||1,224 mL||2,036 mL||1,274 mL|
|39 oz||1,106 mL||1,073 mL||1,256 mL||2,090 mL||1,308 mL|
|40 oz||1,134 mL||1,101 mL||1,289 mL||2,144 mL||1,341 mL|
What Is an Ounce?
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 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.
What Is a Milliliter?
The milliliter is an SI unit of volume in the metric system. In the metric system, "milli" is the prefix for thousandths, or 10-3. A milliliter is sometimes also referred to as a millilitre. Milliliters can be abbreviated as mL, and are also sometimes abbreviated as ml or mℓ. For example, 1 milliliter can be written as 1 mL, 1 ml, or 1 mℓ.
Since one milliliter is equivalent to one cubic centimeter, milliliters are sometimes expressed using the abbreviation for a cubic centimeter (cc) for things such as medical dosages or engine displacements.
Learn more about milliliters.
- 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
- James Bucki, Troy Ounce vs. Ounce, The Spruce, https://www.thesprucecrafts.com/troy-ounce-vs-ounce-4588158
- National Institute of Standards and Technology, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Handbook 44 - 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.44-2019.pdf