There are 8 fluid ounces in a cup. Going the other way, 1 fluid ounce is 0.125 cup (about 1/8). These are fluid ounces, which measure volume.
1 cup=8 fl oz= 236.6 mL
Cups to fluid ounces
| Cups | Fluid ounces |
|---|---|
| 1/8 cup | 1 fl oz |
| 1/4 cup | 2 fl oz |
| 1/3 cup | 2.667 fl oz ≈ 2 2/3 fluid ounces |
| 1/2 cup | 4 fl oz |
| 2/3 cup | 5.333 fl oz ≈ 5 1/3 fluid ounces |
| 3/4 cup | 6 fl oz |
| 1 cup | 8 fl oz |
| 1 1/2 cups | 12 fl oz |
| 2 cups | 16 fl oz |
| 3 cups | 24 fl oz |
| 4 cups | 32 fl oz |
Fluid ounces to cups
| Fluid ounces | Cups |
|---|---|
| 1 fluid ounce | 0.125 cup ≈ 1/8 cup |
| 2 fluid ounces | 0.25 cup ≈ 1/4 cup |
| 4 fluid ounces | 0.5 cup ≈ 1/2 cup |
| 6 fluid ounces | 0.75 cup ≈ 3/4 cup |
| 8 fluid ounces | 1 cup |
| 10 fluid ounces | 1.25 cups ≈ 1 1/4 cups |
| 12 fluid ounces | 1.5 cups ≈ 1 1/2 cups |
| 16 fluid ounces | 2 cups |
| 20 fluid ounces | 2.5 cups ≈ 2 1/2 cups |
| 24 fluid ounces | 3 cups |
| 32 fluid ounces | 4 cups |
| 48 fluid ounces | 6 cups |
| 64 fluid ounces | 8 cups |
Good to know
Recipes that say “ounces” for a liquid mean fluid ounces, a volume. Dry ingredients are different: a cup of flour weighs about 4¼ ounces, a cup of sugar about 7. Use a scale (or our cups-to-grams pages) for those.
In metric, 1 cup is 236.6 mL and 1 fluid ounce is 29.57 mL.
How to work it out
Multiply cups by 8 to get fluid ounces; divide fluid ounces by 8 to get cups.
Questions people ask
How many ounces in a cup?
1 cup is 8 fluid ounces.
8 oz to cups?
8 fluid ounces is 1 cup.
2 cups to oz?
2 cups is 16 fluid ounces.
32 oz to cups?
32 fluid ounces is 4 cups.
16 oz to cups?
16 fluid ounces is 2 cups.
4 oz to cups?
4 fluid ounces is 0.5 cup (about 1/2).