Convert Cups (US) to Fluid Ounces (US)
cup to fl oz · volume conversion
What are cups (us) and fluid ounces (us)?
A US cup is 8 fluid ounces (about 237 mL), the standard recipe measure in the US. A US fluid ounce is about 29.57 mL, used for liquids and beverages. For scale: a standard water bottle holds about 500 mL (17 fl oz), and a US gallon is 3.785 L.
How to convert cups (us) to fluid ounces (us)
1 cup = 8 fl oz. To convert, multiply the number of cups (us) by 8. For example, 5 cup = 40 fl oz, and 20 cup = 160 fl oz. To go the other way, multiply fluid ounces (us) by 0.125 (since 1 fl oz = 0.125 cup).
Cups (US) to Fluid Ounces (US) conversion table
| Cups (US) (cup) | Fluid Ounces (US) (fl oz) |
|---|---|
| 1 | 8 |
| 2 | 16 |
| 5 | 40 |
| 10 | 80 |
| 20 | 160 |
| 50 | 400 |
| 100 | 800 |
FAQ
What is 1 cup in fl oz?
1 cup = 8 fl oz. To convert any amount, multiply the number of cups (us) by 8.
How do I convert fluid ounces (us) back to cups (us)?
Go the other way: 1 fl oz = 0.125 cup, so multiply fluid ounces (us) by 0.125 to get cups (us).
Is a cups (us) bigger than a fluid ounces (us)?
Yes — 1 cup is the larger unit, equal to 8 fl oz.
Are these volume conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.