# How much is 1 oz in a cup?

When looking at liquid measurements, ounces and cups are two common units used. An ounce (oz) is a unit of weight, while a cup is a unit of volume. So how do they relate to each other? Let’s take a closer look.

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## Quick Answer

The quick answer is:

1 fluid ounce (fl oz) = 2 tablespoons = 1/8 cup

So 1 ounce is equal to 1/8 cup. To convert between ounces and cups:

• 1 cup = 8 fluid ounces
• 1 fluid ounce = 1/8 cup

## Ounces and Cups Explained

An ounce (oz) is a unit of weight. In the imperial system, one ounce equals 28.35 grams.

A cup is a unit of volume. One cup equals 236.58 ml or 16 tablespoons. Cups are used to measure the volume or capacity of liquids.

When dealing with water-based liquids, an ounce and a cup can be converted between weight and volume using the density of water. Water has a density of 1 gram per 1 ml. So 1 fluid ounce of water weighs about 28 grams, which is approximately the same as 1 ounce by weight. This allows us to convert between ounces and cups for water and other water-like liquids.

## Converting Ounces to Cups

To summarize:

• 1 fluid ounce (fl oz) = 2 tablespoons = 1/8 cup
• 1 cup = 8 fluid ounces = 16 tablespoons

So to convert:

• To convert fluid ounces to cups: Divide fluid ounces by 8
• To convert cups to fluid ounces: Multiply cups by 8

Some examples:

• 8 fl oz = 8/8 cups = 1 cup
• 16 fl oz (a pint) = 16/8 cups = 2 cups
• 24 fl oz = 24/8 cups = 3 cups
• 1 cup = 1 * 8 fl oz = 8 fl oz
• 2 cups = 2 * 8 fl oz = 16 fl oz (a pint)

## Converting Cups to Ounces

To convert cups to fluid ounces:

• Multiply cups by 8

Examples:

• 1 cup * 8 = 8 fluid ounces
• 2 cups * 8 = 16 fluid ounces (a pint)
• 3 cups * 8 = 24 fluid ounces

## Converting Ounces to Tablespoons and Teaspoons

Here are some common conversions between ounces, tablespoons (tbsp) and teaspoons (tsp):

• 1 fl oz = 2 tbsp = 6 tsp
• 1 tbsp = 3 tsp
• 1/2 fl oz = 1 tbsp
• 1/4 fl oz = 1.5 tbsp
• 1/8 fl oz = 0.5 tbsp = 1.5 tsp

## Converting Cups to Tablespoons and Teaspoons

To convert between cups, tablespoons and teaspoons:

• 1 cup = 16 tbsp = 48 tsp
• 1 tbsp = 3 tsp
• 1/2 cup = 8 tbsp = 24 tsp
• 1/4 cup = 4 tbsp = 12 tsp
• 1/8 cup = 2 tbsp = 6 tsp

## Comparing Weight versus Volume

When looking at ounces and cups, keep in mind that ounces measure weight while cups measure volume. The conversion between weight ounces and fluid ounces depends on the density of the liquid being measured. For pure water, 1 fluid ounce approximately equals 1 ounce by weight. But for other liquids like oil, honey, etc the weight-to-volume conversion will be different.

## Using a Conversion Table

For easy reference, here is a conversion table between fluid ounces, cups, tablespoons and teaspoons:

Fluid Ounces Cups Tablespoons Teaspoons
16 1 32 96
12 1.5 24 72
10 1.25 20 60
8 1 16 48
6 0.75 12 36
5 0.625 10 30
4 0.5 8 24
3 0.375 6 18
2 0.25 4 12
1 0.125 2 6

## Metric Conversions

The conversions above are based on the US customary system. Here are the metric conversions between milliliters (ml) and fluid ounces:

• 1 fluid ounce = 29.57 ml
• 1 milliliter = 0.034 fluid ounces

## Other Useful Conversions

In cooking, baking and mixology, some other useful conversions include:

• 3 teaspoons = 1 tablespoon
• 2 tablespoons = 1 fluid ounce
• 16 tablespoons = 1 cup
• 2 cups = 1 pint
• 2 pints = 1 quart
• 4 quarts = 1 gallon

## Conclusion

To summarize:

• Ounces and cups are different units – ounces measure weight while cups measure volume
• For water-based liquids, 1 fluid ounce = about 1 ounce by weight
• There are 8 fluid ounces in 1 cup
• To convert ounces to cups, divide fluid ounces by 8
• To convert cups to fluid ounces, multiply cups by 8
• Use a conversion table as a quick reference for common measurements

Knowing how to convert between fluid ounces and cups is handy for cooking, baking and portion control. With some practice, these conversions can easily be done in your head. Just remember there are 8 fluid ounces in a cup, and adjust the units accordingly based on what quantity you are starting with.