How many Ounces in a half Cup? well answer is that there are 4 fluid ounces (fl oz) in a half cup.
As we know, there are 8 fluid ounces (fl oz) in a cup of US standard of cups.
If we want to know that How many ounces in a half cup? Then we have to consider this as:
1 cup = 8 fl oz
1/2 cup = 4 fl oz.
According to Imperial Units, in terms of liquid half cup contains 4.17 imperial fluid ounces. And in terms of dry, half cup contains 4.16 ounces.
How many liquid ounces is half a cup?
To know about how many ounces is half a cup, we will discuss a table to dtermine them properly. Here is the table;
1 cup  8 fluid ounces  1/2 pint  237 ml 

2 cups  16 fluid ounces  1 pint  474 ml 
4 cups  32 fluid ounces  1 quart  946 ml 
2 pints  32 fluid ounces  1 quart  0.964 liters 
4 quarts  128 fluid ounces  1 gallon  3.784 liters 
Weight
For 1 US cup of water, it weighs 8.5 fl oz and for half cup it weighs 4.25 fluid ounces.
As 1 US cup = 239 mm. Then;
Table
1/4 cup  59 ml 

1/3 cup  79 ml 
1/2 cup  118 ml 
2/3 cup  158 ml 
3/4 cup  177 ml 
1 cup  239 ml 
2 cups  473 ml 
4 cups  946 ml 
8 cups or 1/2 gallon  1.9 liters 
How many dry ounces is half a cup?
For liquid measures, we have to determine cup in terms of dry products. There is a conversion table which will help you to know exact and accurate measures. The table is;
Dry measures
3 teaspoons  1 tablespoon  1/2 ounce  14.3 grams  

2 tablespoons  1/8 cup  1 fluid ounce  28.3 grams  
4 tablspoons  1/4 cup  2 fluid ounces  56.7 grams  
5 1/3 tablespoons  1/3 cup  2.6 fluid ounces  75.6 grams  
8 tablespoons  1/2 cup  4 ounces  113.4 grams  
12 tablespoons  3/4 cup  6 ounces  .375 pound  
32 tablespoons  2 cups  16 ounces  1 pound  
64 tablespoons  4 cups  32 ounces  2 pounds 
How many Ounces in a quarter Cup?
How many ounces in a quarter of cup 1/4 cup? There are 2 fluid ounces (fl oz) in a quarter cup of US standard.
We know that 1 cup is equal to 8 ounces. So,
1 cup = 8 ounces
1/4 of cup = 0.25 of cup
0.25cup x 8 fl oz = 2 fl oz.
Similarly,
0.5cup or 1/2cup x 8 fl oz = 4 fl oz.
0.75cup or 1/3cup x 8 fl oz = 6 fl oz.
Conversion Table
OUNCE  CUP 

8 oz  1 cup 
2  1/4 cup 
4  1/2 cup 
6  1/3 cup 
Different Measurements of Cups

Liquid measuring  Liquid measuring container which is cup is there to measure exact amount of fluid ounces in a cup. So;
1 cup = 8 fluid ounces = 1/2 pint = 237 ml. 
Dry measuring  Dry cups measure accurate amount of ingredients in cups to know better ingredients and they are levelled to the edge of the cup.
1 dry cup = 6.8 US dry ounces = 16 tbsp = 5 pounds = 222 grams.
Frequently asked Questions
Here are some frequently asked questions related to question how many ounces in a half cup?
Is 1 cup dry the same as 1 cup liquid?
Yes, one dry cup and one liquid cup is same because they measure the same amount of volume. So in term of volume they are technically same. But if we want to measure grams and ingredients amounts, then it may be different in readings.
Is 1 fl oz the same as 1 oz?
How many oz in 1 fl oz? The answer is 1? We assume you are converting between ounce [US, ] and US fluid ounce.
The SI unit for volume is the cubic meter.
1 cubic meter is equal to 33814.0225 oz, or 33814.022 fl oz
How can I measure liquids without a measuring cup?
There are several methods to measure liquids without cups. These methods are;

Use some object as a reference like tablespoon for measuring

Use an equal size of vessel to your cup for measuring liquids and pouring liquid

Place your container or vessel on table and see the liquid with your eye level to know accurate amount.
Conclusion
How many ounces in a half cup? We concluded that there are 4 fluid ounces in a half cup. There are 8 fluid ounces in 1 cup of US standard. When we divide the full cup ounces in a half, we came to know exact amount of ounces in half cup. 1/2 cup = 0.5 cup. So, 0.5 x 8 = 4 fl oz.
Related Topics
How many Ounces in 4 Cups?
How many Ounces in a quarter Cup?
How many Ounces in a Cup of Water?
How many ounces in 1  4 cups?
How many ounces in 1  8 cups?