How many oz are in a fl oz?

What is the difference between a Fluid Ounce and a Weight Ounce?

The solid ounce is also known as a dry ounce and its abbreviation is dry oz and the fluid ounce is abbreviated as fl oz.

Do not get confused with dry ounces and fluid ounces. Dry ounces measure weight and fluid ounces measure volume.

Here, we're gonna learn "the difference between a weight ounce and a fluid ounce".

In mathematics, we actually call the weight ounce a dry ounce. As per the abbreviation let's use,

dry ounce = oz

and

fluid ounce = fl oz

dry oz -> 1 oz = 1/16 lb (Here, when we're dealing with dry ounces we just say "ounce")

fl oz -> 1 fl oz = 1/16 pint


When dealing with volume measurements using fluid ounces we shall know the following conversions.

8 fl oz = 1 cup

1 pint = 2 cups

1 quart = 2 pints

1 gallon = 4 quarts


Now, as far as weight goes if we're converting one ounce to the metric system,

1 oz = 28.3495 g

and,

1 fl oz = 29.573 ml


Now, the thing with the fluid ounce, let's say we're dealing with water,

In the metric system, 1 g = 1 ml

But, as per above,

1 oz = 28.3495 g and 1 fl oz = 29.573 ml

With that, we can decide on dry ounces and the fluid ounces are not the same as one gram to one milliliter.

How many oz are in an fl oz?

As per above, one dry ounce is not equal to one fluid ounce. It also depends on what you're measuring. So you have to make sure you're checking on what substance you're using.

For example with water,

1 dry oz of water = 0.9587 fl oz of water

and

1 fl oz of water = 1.0431 dry oz of water

So with water, they're very close together. But something that has a much greater density may have a much smaller volume and much higher weight.