Ever been in the kitchen, staring at a recipe that calls for milliliters when all you have is an ounce-measuring cup? Or vice versa? It happens all the time! Whether you’re cooking, baking, or even just trying to figure out how much water you’re drinking, understanding how to convert between milliliters (mL) and ounces (oz) is super helpful.
So, how many ounces is 350 ml, exactly? This article breaks down the conversion, explains the difference between fluid ounces and weight ounces, and gives you some easy ways to figure it out yourself.
Milliliters and ounces: what’s the difference?
What is a milliliter (mL)?
A milliliter is a unit of measurement in the metric system. Think of it this way: one milliliter equals one one-thousandth of a liter, or one cubic centimeter.
Milliliters are commonly used to measure liquid volumes. For example, you might see milliliters used to measure the amount of cough syrup in a dose or the amount of water in a small bottle.
What is an ounce (oz)?
An “ounce” can be a unit of weight or a unit of volume, so it’s easy to get confused! When we talk about converting milliliters to ounces, we’re talking about fluid ounces.
For the record, an ounce (when used to measure weight) is one-sixteenth of a pound or about 28.35 grams.
Converting 350 mL to Fluid Ounces
Okay, so how do we figure out how many ounces are in 350 mL? It’s all about the conversion factor.
Generally, 1 milliliter (mL) is about 0.033814 U.S. fluid ounces (fl oz). So, to convert, you just multiply!
Here’s the math: 350 mL 0.033814 fl oz/mL = roughly 11.835 U.S. fluid ounces. That result — 350 mL equals approximately 11.834908 U.S. fluid ounces — comes from this reliable reference.
Keep in mind this is an approximate conversion. Also, there’s a slight difference between U.S. and Imperial fluid ounces, so specify “U.S. fluid ounces” if you need to be precise.
Milliliters to Ounces: Volume vs. Weight and the Role of Density
It’s important to understand that milliliters measure volume, whereas ounces can measure either weight or volume. Volume is how much space something takes up, and weight is how heavy it is when gravity is acting on it.
When you’re converting volume to volume, it’s fairly easy. But when you want to convert volume to weight, you have to know the density of the substance.
Density is the mass per unit volume, which is often expressed in grams per milliliter or ounces per milliliter.
If you want to convert milliliters to ounces by weight, you’ll use this formula: weight (oz) = volume (mL) density (oz/mL).
For example, water has a density of around 1 g/mL, which is about 0.035 oz/mL. So, 350 mL of water weighs about 350 mL 0.035 oz/mL = 12.25 ounces.
Because the density varies depending on the substance, 350 mL of different substances will have different weights.
How to use this information
When you’re cooking, pay attention to whether your recipe calls for fluid ounces (volume) or ounces (weight). For dry ingredients, measuring by weight is usually more precise because some ingredients are denser than others.
In science and medicine, accurate volume measurements are essential. Always use properly calibrated measuring devices.
For quick estimates, online converters and conversion tables are helpful.
In Summary
To quickly recap: 350 mL is about 11.835 U.S. fluid ounces. When you’re measuring liquids, it’s important to remember that fluid ounces measure volume, not weight.
If you need to convert from volume to weight, you’ll also need to consider the density of the liquid.
Whether you’re cooking, baking, or following medical instructions, paying close attention to the units and measurement methods can help you get accurate results every time.