Oz to Cups Converter: Convert Fluid Ounces to Cups Instantly
Convert U.S. fluid ounces to cups in seconds using the formula cups = oz ÷ 8. Use the converter below, or check the quick table for common values like 4 oz, 8 oz, 12 oz, and 16 oz.
Note: This converter is for liquid volume in U.S. customary measurement.
For U.S. fluid ounces only. Dry-ounce conversions vary by ingredient.
Quick Reference
Oz to Cups Conversion Table
Use this quick reference table to check common fluid ounce to cup conversions for cooking, baking, drink portions, and everyday kitchen measurements.
| Fluid Ounces (oz) | Calculation | Cups |
|---|---|---|
| 0.5 oz | 0.5 ÷ 8 | 0.0625 cup |
| 1 oz | 1 ÷ 8 | 0.125 cup |
| 1.5 oz | 1.5 ÷ 8 | 0.1875 cup |
| 2 oz | 2 ÷ 8 | 0.25 cup |
| 2.5 oz | 2.5 ÷ 8 | 0.3125 cup |
| 3 oz | 3 ÷ 8 | 0.375 cup |
| 4 oz | 4 ÷ 8 | 0.5 cup |
| 5 oz | 5 ÷ 8 | 0.625 cup |
| 6 oz | 6 ÷ 8 | 0.75 cup |
| 8 oz | 8 ÷ 8 | 1 cup |
| 10 oz | 10 ÷ 8 | 1.25 cups |
| 11 oz | 11 ÷ 8 | 1.375 cups |
| 12 oz | 12 ÷ 8 | 1.5 cups |
| 14 oz | 14 ÷ 8 | 1.75 cups |
| 15 oz | 15 ÷ 8 | 1.875 cups |
| 16 oz | 16 ÷ 8 | 2 cups |
| 20 oz | 20 ÷ 8 | 2.5 cups |
| 21 oz | 21 ÷ 8 | 2.625 cups |
| 24 oz | 24 ÷ 8 | 3 cups |
| 30 oz | 30 ÷ 8 | 3.75 cups |
| 32 oz | 32 ÷ 8 | 4 cups |
| 60 oz | 60 ÷ 8 | 7.5 cups |
| 100 oz | 100 ÷ 8 | 12.5 cups |
How It Works
How to Convert Oz to Cups
To convert fluid ounces to cups, divide the number of ounces by 8. This is the standard U.S. liquid volume conversion.
The Exact Oz to Cups Formula
Use this formula:
Since 1 cup = 8 fluid ounces, every ounce equals 0.125 cup.
Step-by-Step Example
Start with the ounce value
Example: convert 16 oz to cups.
Divide by 8
16 ÷ 8 = 2
Write the result
16 fluid ounces = 2 cups
Measurement Guide
Fluid Ounces to Cups: What You Need to Know
A fluid ounce is a liquid volume unit, while a cup is a larger volume unit commonly used in recipes, nutrition labels, and kitchen measurements. When people search how many cups in an ounce, how many cups are in an ounce, or how many cups is an ounce, they are usually looking for a U.S. liquid conversion.
This page uses the U.S. customary standard, where 1 cup = 8 fluid ounces. That means 4 oz = 0.5 cup, 8 oz = 1 cup, 12 oz = 1.5 cups, and 16 oz = 2 cups.
This converter is for liquid volume, not dry ingredient weight. Searches like ounces to cups liquid follow the formula here, but dry ingredients such as flour, sugar, or rice can weigh differently by ingredient and density.
Popular Conversions
Most Searched Oz to Cups Conversions
Here are the most searched oz to cups conversions and their exact answers using U.S. fluid ounces.
1 oz to cups
1 oz = 0.125 cup. If you searched 1 oz to cups, 1 ounce to cups, or one ounce to cups, the answer is one-eighth of a cup.
2 ounces to cups
2 oz = 0.25 cup. This answers 2 ounces to cups and how much is 2 oz in cups.
3 oz to cups
3 oz = 0.375 cup. If you are asking how many cups is 3 oz or how much is 3 oz in cups, the answer is three-eighths of a cup.
4 ounces to cups
4 oz = 0.5 cup. This is the same as half a cup and matches searches like how many cups is 4 oz and how much is 4 oz in cups.
5 oz to cups
5 oz = 0.625 cup. If you searched how many cups is 5 oz or how much is 5 oz in cups, this is the exact U.S. liquid result.
6 ounces to cups
6 oz = 0.75 cup. This means how much is 6 oz in cups equals three-quarters of a cup.
8 oz to cups
8 oz = 1 cup. This also answers 8 ounces to cups, how many cups is 8 oz, and how many cups are in an 8 oz.
10 oz in cups
10 oz = 1.25 cups. This is a useful kitchen conversion for liquids, sauces, and drink portions.
11 oz to cups
11 oz = 1.375 cups. If you searched 11 oz to cups, this is the exact answer.
12 oz to cups
12 oz = 1.5 cups. This also answers 12 ounces to cups and how many cups are in 12 oz.
15 oz to cups
15 oz = 1.875 cups. This is a common search for sauces, drinks, and liquid containers.
16 oz to cups
16 oz = 2 cups. This also matches 16 ounces to cups, 16 oz in cups, 16 fl oz to cups, and how many cups in 16 oz.
20 oz to cups
20 oz = 2.5 cups. If you searched how many cups is 20 oz, that equals two and a half cups.
21 oz to cups
21 oz = 2.625 cups. This is the exact conversion for 21 oz to cups.
30 oz in cups
30 oz = 3.75 cups. This also answers how many cups is 30 oz.
60 oz to cups
60 oz = 7.5 cups. If you searched 60 ounces to cups, the result is seven and a half cups.
100 oz to cups
100 oz = 12.5 cups. This is the exact answer for 100 oz to cups.
Fraction Conversions
Fractional Ounces to Cups Conversion
Many users search for smaller values when measuring liquids. Here are the exact answers for common fractional ounce to cup conversions.
How many cups is 1/2 oz?
0.5 oz = 0.0625 cup. This is the exact result for how many cups is 1/2 oz.
How many cups is 3/4 oz?
0.75 oz = 0.09375 cup. This matches searches like 3/4 oz is how many cups.
How many cups is 1 1/4 oz?
1.25 oz = 0.15625 cup. This answers how many cups is 1 1 4 oz and 1 4 ounce to cups.
How many cups is 1 1/2 ounces?
1.5 oz = 0.1875 cup. If you searched 1 1/2 ounces is how many cups or how many cups in 1 1/2 ounces, this is the exact answer.
How many cups is 2 1/2 ounces?
2.5 oz = 0.3125 cup. This also answers 2.5 oz to cups and how many cups is 2 1/2 ounces.
FAQ
Frequently Asked Questions About Oz to Cups
Quick answers to the most common oz to cups, ounces to cups, and fluid ounces to cups questions.