Ounces To Milliliters Converter
oz to ml, fluid ounce to ml, imperial to metric volume, cooking conversion
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Ounces to Milliliters (oz to mL) Conversion Made Easy
Quickly and accurately convert US fluid ounces (oz) to milliliters (mL). Learn the formula, follow step-by-step examples, and use our converter for cooking, medicine, and more.
Converting between fluid ounces (oz) and milliliters (mL) is an essential task for anyone dealing with liquid volumes across different measurement systems. The U.S. uses fluid ounces for everything from baby bottles to beverage cans, while the rest of the world and the entire scientific community use milliliters. Our Ounces to Milliliters Converter provides a seamless way to bridge this gap.
What is a US Fluid Ounce (oz)?
The US fluid ounce (fl oz) is a unit of volume in the U.S. customary system. It's important not to confuse it with the ounce as a unit of weight. A fluid ounce is defined as 1/128 of a US gallon, and it's a common measurement in American recipes, nutrition labels, and product packaging. For other cooking conversions, our Cups to mL Calculator might also be useful.
What is a Milliliter (mL)?
The milliliter (mL) is a metric unit of volume. It is equal to one-thousandth of a liter and is also equivalent to one cubic centimeter (cm³). The milliliter is the standard for measuring small liquid volumes in science, medicine, and cooking worldwide due to its simplicity and integration with the decimal-based metric system.
How to Convert Ounces to Milliliters (mL)
The conversion from US fluid ounces to milliliters is based on a standardized and precise factor.
The Official Formula
One US fluid ounce is officially defined as being equal to approximately 29.5735 milliliters.
1 US fl oz ≈ 29.5735 mLTo convert a volume from ounces to milliliters, you multiply the number of ounces by this conversion factor.
Milliliters = Fluid Ounces × 29.5735Step-by-Step Guide
- Get the Volume in Ounces: Start with the value in fluid ounces.
- Multiply by 29.5735: Use a calculator to multiply your ounce value by 29.5735.
- Result in mL: The answer is the equivalent volume in milliliters.
Practical Example: Infant Formula
You need to prepare a 4-ounce bottle of baby formula, but the measuring cup you have is in mL.
- Volume in Ounces: 4 fl oz
- Calculation: 4 oz × 29.5735 mL/oz = 118.294 mL
- Result: You should measure approximately 118 mL of water.
How to Convert Milliliters (mL) to Ounces (oz)
To convert in the opposite direction, from mL to oz, you divide by the conversion factor.
The Formula
Fluid Ounces = Milliliters / 29.5735Example: Beverage Can
A standard soda can in Europe is 330 mL. How many fluid ounces is this?
- Volume in mL: 330 mL
- Calculation: 330 mL / 29.5735 mL/oz = 11.158 fl oz
- Result: The can holds about 11.2 fluid ounces, slightly less than the standard 12 oz US can.
When is this Conversion Used?
- Cooking and Baking: Following recipes from different parts of the world.
- Healthcare: Administering liquid medications with precision.
- Travel: Understanding liquid allowances for carry-on luggage (e.g., TSA's 3.4 oz limit is 100 mL).
- Science: Converting lab measurements from field notes to standard metric documentation. For more science conversions check our Molarity Calculator.
Further Resources
For more detailed information on volume units and their official definitions, please visit:
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