Convert Water from Cup (US) to Ounces
How many ounces is 1 US cup of water?
1 US cup of water (H2O) is 8.47 ounces. 2 US cups of water is 16.93 ounces. 1/2 US cup of water is 4.23 ounces. 1/4 US cup (0.25 US cup) of water is 2.12 ounces. Use the converter below for any amount.
- These figures use the US cup (240 ml). A metric cup is slightly larger at 250 ml, so it holds a little more. Use the metric 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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8.47 OuncesWater Calculators & Baking Tools
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Common Water Conversions
Here are the most common water conversions from cups (US) to ounces.
| Cups (US) | Ounces |
|---|---|
| 0.25 cups (US) | 2.12 oz |
| 0.5 cups (US) | 4.23 oz |
| 0.75 cups (US) | 6.35 oz |
| 1 cup (US) | 8.47 oz |
| 1.25 cups (US) | 10.58 oz |
| 1.5 cups (US) | 12.7 oz |
| 2 cups (US) | 16.93 oz |
| 2.5 cups (US) | 21.17 oz |
| 3 cups (US) | 25.4 oz |
For the reverse conversion, see 1 ounce of water in US cups.
Frequently Asked Questions
- What is 1 US cup of water in ounces?
- 1 US cup of water is 8.47 ounces. The ratio is fixed, so 2 US cups of water is 16.93 ounces and 0.5 US cups is 4.23 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 US cups of water?
- 1.5 US cups of water is 12.7 ounces. The ratio is fixed, so 1 US cup of water is 8.47 ounces and 2 US cups is 16.93 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 US cups of water in ounces?
- 2 US cups of water is 16.93 ounces. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 US cup of water is 8.47 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 US cups of water is 8.47 ounces?
- 8.47 ounces of water is 1 US cup. The conversion works the same in reverse, so you can switch between ounces and US cups without changing the result. This helps when a recipe lists US 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 US cup of H2O in ounces?
- H2O is another name for water, so 1 US cup of H2O is 8.47 ounces, exactly the same as water. The figure does not change with the name: 2 US cups is 16.93 ounces and 0.5 US cups is 4.23 ounces. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.