Cups to Ounces Converter - Convert Cups to Oz (2024)

Convert cups to oz easily (US cups or Imperial cups). Calculate how much is X cups of water, milk, flour, butter, sugar, salt, or another recipe ingredient in oz so your trusty kitchen scale can help you follow a recipe using this cups to oz converter.

Quick navigation:

  1. Cups and ounces in recipes
  2. How much is a cup in ounces?
  3. Converting between cups and oz
  4. Cups to oz conversion tables
  • Cups of water to ounces conversion table
  • Cups of milk to ounces conversion table
  • Cups of vegetable oil to ounces conversion table

Cups and ounces in recipes

The cup is a defined measurement unit of volume, but there are different definitions adopted over time. The most widely used is the US legal cup which is defined as containing 240 ml of volume. A more customary unit encountered in older recipes is the Imperial cup which is larger at 284 ml. Both units are supported by our converter.

Unfortunately, many recipes specify ingredients in units of volume such as cups instead of using weights. The issue is that volume is filled differently by different ingredients depending on their specific density and how finely grained the matter is. Getting the right amount of the ingredient can be even more challenging if the recipe does not specify what type of a cup is being used.

Still, we can calculate the weight of an ingredient in ounces (oz) by using the given volume and the expected density using averages. Once that is done, any good scale will allow us to follow the recipe with acceptably low error.

How much is a cup in ounces?

First, one needs to specify the type of substance contained within the cup. That is because the weight in ounces depends directly on the density of the substance and different substances have different densities. For example, a cup of water weighs about eight and a half ounces, while a cup of vegetable oil weighs just 7.7 ounces. This is also the reason oil floats in water.

It should be noted that cooking ingredient density can vary substantially which is especially true for anything that can be ground down with different levels of fineness. This cups to ounces converter features a list of commonly used recipe ingredients. Their densities are estimated from known data, allowing you to convert between cups and ounces with reasonable accuracy. However, some error is inevitable so all such conversions should be taken with a grain of salt.

Converting between cups and oz

The conversion from cups to ounces is straightforward once you know the density of the substance you need to convert. For example, a recipe might specify 2 cups of water, or 4 cups of flour, and you may want to convert it to grams. To do so, follow these instructions:

A cup of water to oz

Sample task: convert one cup of water to ounces, knowing that the density of water is 1 gram per milliliter meaning that a US cup holds 8.5 oz of water. Solution:

Formula:
US Legal Cups * 8.5 = oz
Calculation:
1 US Legal Cups * 8.50 = 8.50 oz
End result:
1 US Legal Cups is equal to 8.50 oz

Two cups of milk to oz

Sample task: convert 2 cups of milk to ounces, knowing that the density of milk is 1.4 grams per milliliter meaning that a US legal cup holds 8.8 oz of milk. Solution:

Formula:
cups * 8.8 = oz
Calculation:
2 cups * 8.80 = 17.60 oz
End result:
2 cups is equal to 17.60 oz


Cups to oz conversion tables

For your convenience, we present conversion charts for some of the most used cooking ingredients, namely water, milk, and vegetable oil.

Cups of water to ounces conversion table

Here is a convenient table with often used quantities of water in US cups and their corresponding values in ounces.

Cups of water to oz conversion table
Cups of waterOunces
¼ cup2.1 oz
⅓ cup2.8 oz
½ cup4.2 oz
1 cup8.5 oz
2 cups17 oz
3 cups25.5 oz
4 cups34 oz

Cups of milk to ounces conversion table

Below is a kitchen conversion chart in US cups of milk and their corresponding values in ounces.

Cups of milk to oz conversion table
Cups of milkOunces
¼ cup2.2 oz
⅓ cup3 oz
½ cup4.4 oz
1 cup8.8 oz
2 cups17.6 oz
3 cups26.3 oz
4 cups35.1 oz

Cups of vegetable oil to ounces conversion table

Here is a conversion chart between cups of vegetable oil and ounces. It should work well for any kind of vegetable oil, including olive oil, sunflower oil, and others as they have very similar density.

Cups of oil to oz conversion table
Cups of vegetable oilOunces
¼ cup2 oz
⅓ cup2.6 oz
½ cup3.8 oz
1 cup7.7 oz
2 cups15.4 oz
3 cups23.1 oz
4 cups30.8 oz
Cups to Ounces Converter - Convert Cups to Oz (2024)

FAQs

Cups to Ounces Converter - Convert Cups to Oz? ›

To convert cups to fluid ounces, you need to multiply cups by 8. Let's see some examples: 1 cup = 8 fluid ounces. 2 cups = 2 × 8 = 16 fluid ounces.

How do you convert cups to ounces? ›

To convert cups to fluid ounces, you need to multiply cups by 8. Let's see some examples: 1 cup = 8 fluid ounces. 2 cups = 2 × 8 = 16 fluid ounces.

How many cups is 1 cup in Oz? ›

In the US, 1 cup is equal to 8 fluid ounces. This conversion is widely used and not just for recipes.

How much is 4 cups in ounces? ›

There are four cups in one quart, or 32 fluid ounces.

Is 1 cup 8 oz or 16 oz? ›

Fluid Ounces to Cups

Use the conversion 1 cup = 8 fluid ounces for liquids.

How much is 2 cups in ounces? ›

Some useful measurements include: 8 fluid ounces = 1 cup. 16 fluid ounces = 2 cups.

How many ounces are 10 cups? ›

80 fluid ounces

How to measure 1 oz? ›

You don't have to use a scale to measure fluid ounces. Instead, you can measure fluid ounces with a measuring cup. A one-cup measuring cup holds 8 fluid ounces, so 1 ounce would be 1/8 of a cup.

Does 24 oz equal 1 cup? ›

There are 3 cups in 24 fluid ounces. 1 cup equals 8 fluid ounces (which is abbreviated 'fl. oz.

How many ounces is 1 gallon? ›

The most important thing to remember about changing ounces to gallons is that there are 128 fluid ounces in every gallon. Another way to think of it is for every gallon, you have 128 ounces.

How much is 5 ounces in cups? ›

1 ounce is equal to 0.125 cups. Therefore, 5 ounces is equal to 0.625 cups.

How much is 6 cups in ounces? ›

In order to convert cups to fluid ounces, we need to know that 1 cup is equal to 8 fluid ounces. Therefore, to find out how many fluid ounces are in 6 cups, we can multiply 6 by 8. 6 cups * 8 fluid ounces/cup = 48 fluid ounces.

Are wet and dry cups the same? ›

Unfortunately, although a liquid measure and a dry one actually hold the same volume, the manner in which we measure dry versus wet ingredients greatly differs, and thus the cups are anything but interchangeable.

What does 16 oz look like in cups? ›

16 fluid ounces equals 2 cups. One cup is equal to 8 ounces. To find the number of cups that is equal to 16 ounces, divide 16 by 8. 16 divided by 8 equals 2.

What size cup is 1 oz? ›

To convert 1 ounce to cups, you can simply use 1/8 cup as a substitute. To get the number of cups from fluid ounces, you divide the number of ounces by 8. So 1 ounce divided by 8 equals 1/8 cup. If you only have teaspoons, you multiply the number of ounces by 6.

How do you convert dry cups to dry ounces? ›

There are 4.5 dry-weight ounces in 1 cup. This is according to the US system.

Is 16 oz 1 or 2 cups? ›

16 fluid ounces equals 2 cups. One cup is equal to 8 ounces. To find the number of cups that is equal to 16 ounces, divide 16 by 8. 16 divided by 8 equals 2.

Is 8 oz equal to 2 cups? ›

8 ounces is equal to 1 cup or 48 tsp.

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