Quick answer: 1 Cup (US) in Fluid Ounce (US)
1 cup equals 8.115365 fl oz. To convert Cup (US) to Fluid Ounce (US), multiply by 8.115365 using the free calculator above — no signup needed.
Volume & Capacity units
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About Volume & Capacity Converter
The Volume & Capacity Converter converts between 8 different units, including Liter, Milliliter, Cubic Meter, Gallon (US), Quart (US). The base unit is the Liter, and every other unit on this page is defined as an exact multiple of it. Type any value into the calculator above to convert instantly — free, unlimited, no signup and nothing to install.
Common equivalents: 1 Liter = 1000 Milliliter, 0.001 Cubic Meter, 0.264172 Gallon (US).
Scale of this category: the smallest unit is the Milliliter (mL) and the largest is the Cubic Meter (m³).
Last updated: 2026-09-15
Volume & Capacity conversion factors
| Unit | Symbol | Value in Liter |
|---|---|---|
| Liter | L | 1 L = 1 L |
| Milliliter | mL | 1 mL = 0.001 L |
| Cubic Meter | m³ | 1 m³ = 1000 L |
| Gallon (US) | gal | 1 gal = 3.785412 L |
| Quart (US) | qt | 1 qt = 0.946353 L |
| Pint (US) | pt | 1 pt = 0.473176 L |
| Cup (US) | cup | 1 cup = 0.24 L |
| Fluid Ounce (US) | fl oz | 1 fl oz = 0.0295735 L |
Worked Examples
See exactly how the conversion works with real numbers, step by step.
How much is 1 Cup (US) in Fluid Ounce (US)?
- Multiply 1 by the conversion factor 8.115365
- 1 Cup (US) = 8.115365 Fluid Ounce (US)
How much is 5 Cup (US) in Fluid Ounce (US)?
- Multiply 5 by the conversion factor 8.115365
- 5 Cup (US) = 40.576827 Fluid Ounce (US)
How much is 25 Cup (US) in Fluid Ounce (US)?
- Multiply 25 by the conversion factor 8.115365
- 25 Cup (US) = 202.884136 Fluid Ounce (US)
Quick Conversion Reference Table
| Cup (US) (cup) | Fluid Ounce (US) (fl oz) |
|---|---|
| 1 cup (Cup (US)) | 8.115365 fl oz (Fluid Ounce (US)) |
| 2 cup (Cup (US)) | 16.230731 fl oz (Fluid Ounce (US)) |
| 5 cup (Cup (US)) | 40.576827 fl oz (Fluid Ounce (US)) |
| 10 cup (Cup (US)) | 81.153654 fl oz (Fluid Ounce (US)) |
| 20 cup (Cup (US)) | 162.307309 fl oz (Fluid Ounce (US)) |
| 50 cup (Cup (US)) | 405.768272 fl oz (Fluid Ounce (US)) |
| 100 cup (Cup (US)) | 811.536545 fl oz (Fluid Ounce (US)) |
| 500 cup (Cup (US)) | 4057.68 fl oz (Fluid Ounce (US)) |
| 1000 cup (Cup (US)) | 8115.37 fl oz (Fluid Ounce (US)) |
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FAQ
How much is 1 Cup (US) in Fluid Ounce (US)?
1 Cup (US) = 8.115365 Fluid Ounce (US).
How do I convert Cup (US) to Fluid Ounce (US)?
Enter your value in Cup (US) into the converter above and the result in Fluid Ounce (US) appears instantly. 1 cup equals 8.115365 fl oz — just multiply your value by 8.115365.
What is the formula for Cup (US) to Fluid Ounce (US)?
The formula is: value in Fluid Ounce (US) = value in Cup (US) × 8.115365. For example, 5 cup × 8.115365 = 40.576827 fl oz.
Is this Cup (US) to Fluid Ounce (US) converter free and accurate?
Yes. This Cup (US) to Fluid Ounce (US) converter is 100% free, uses the exact international conversion factor (8.115365), and works on any device with no signup.
How do I convert Fluid Ounce (US) back to Cup (US)?
To convert back, divide by 8.115365 (or multiply by 0.123223). You can also use our dedicated How Many Cup (US) in 1 Fluid Ounce (US)? page for instant results.
Do I need to download an app or sign up?
No. The converter runs entirely in your browser — nothing to install, no account, no fees. It even keeps working offline once the page has loaded.
Which Volume & Capacity units are supported?
This converter supports 8 units: Liter, Milliliter, Cubic Meter, Gallon (US), Quart (US), Pint (US), Cup (US), Fluid Ounce (US).