Convert Water from Cup to Ounces
How many ounces is 1 cup of water?
1 cup of water (H2O) is 8.82 ounces. 2 cups of water is 17.64 ounces. 1/2 cup of water is 4.41 ounces. 1/4 cup (0.25 cup) of water is 2.21 ounces. Use the converter below for any amount.
- These figures use the metric cup (250 ml). A US cup is slightly smaller at 240 ml, so it holds a little less. Use the US cup converter →
- Cup sizes are not standard worldwide, so the same cup of an ingredient can weigh more or less depending on the country. What is a cup measurement →
No measuring cups? The tool below gets you close, and a measuring cup set keeps every batch the same.
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8.82 OuncesWater Calculators & Baking Tools
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Common Water Conversions
Here are the most common water conversions from cups to ounces.
| Cups | Ounces |
|---|---|
| 0.25 cups | 2.21 oz |
| 0.5 cups | 4.41 oz |
| 0.75 cups | 6.62 oz |
| 1 cup | 8.82 oz |
| 1.25 cups | 11.03 oz |
| 1.5 cups | 13.23 oz |
| 2 cups | 17.64 oz |
| 2.5 cups | 22.05 oz |
| 3 cups | 26.46 oz |
For the reverse conversion, see 1 ounce of water in cups.
Frequently Asked Questions
- What is 1 cup of water in ounces?
- 1 cup of water is 8.82 ounces. The ratio is fixed, so 2 cups of water is 17.64 ounces and 0.5 cups is 4.41 ounces. Use the converter above for any quantity, or check the conversion chart on this page for the most common amounts at a glance. Open the water converter
- How many ounces is 1.5 cups of water?
- 1.5 cups of water is 13.23 ounces. The ratio is fixed, so 1 cup of water is 8.82 ounces and 2 cups is 17.64 ounces. Type any other amount into the converter above for the exact figure, or use the chart above for the common ones.
- What is 2 cups of water in ounces?
- 2 cups of water is 17.64 ounces. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 cup of water is 8.82 ounces, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact ounces reading.
- How many cups of water is 8.82 ounces?
- 8.82 ounces of water is 1 cup. The conversion works the same in reverse, so you can switch between ounces and cups without changing the result. This helps when a recipe lists cups but you would rather weigh or measure in ounces. The converter above and the chart above cover both directions for any amount.
- How much is 1 cup of H2O in ounces?
- H2O is another name for water, so 1 cup of H2O is 8.82 ounces, exactly the same as water. The figure does not change with the name: 2 cups is 17.64 ounces and 0.5 cups is 4.41 ounces. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.