Quick answer: 1 Fluid Ounce (US) in Cup (US)
1 fl oz equals 0.123223 cup. To convert Fluid Ounce (US) to Cup (US), multiply by 0.123223 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 Fluid Ounce (US) in Cup (US)?
- Multiply 1 by the conversion factor 0.123223
- 1 Fluid Ounce (US) = 0.123223 Cup (US)
How much is 10 Fluid Ounce (US) in Cup (US)?
- Multiply 10 by the conversion factor 0.123223
- 10 Fluid Ounce (US) = 1.23223 Cup (US)
How much is 100 Fluid Ounce (US) in Cup (US)?
- Multiply 100 by the conversion factor 0.123223
- 100 Fluid Ounce (US) = 12.322304 Cup (US)
Quick Conversion Reference Table
| Fluid Ounce (US) (fl oz) | Cup (US) (cup) |
|---|---|
| 1 fl oz (Fluid Ounce (US)) | 0.123223 cup (Cup (US)) |
| 2 fl oz (Fluid Ounce (US)) | 0.246446 cup (Cup (US)) |
| 5 fl oz (Fluid Ounce (US)) | 0.616115 cup (Cup (US)) |
| 10 fl oz (Fluid Ounce (US)) | 1.23223 cup (Cup (US)) |
| 20 fl oz (Fluid Ounce (US)) | 2.464461 cup (Cup (US)) |
| 50 fl oz (Fluid Ounce (US)) | 6.161152 cup (Cup (US)) |
| 100 fl oz (Fluid Ounce (US)) | 12.322304 cup (Cup (US)) |
| 500 fl oz (Fluid Ounce (US)) | 61.61152 cup (Cup (US)) |
| 1000 fl oz (Fluid Ounce (US)) | 123.22304 cup (Cup (US)) |
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FAQ
How much is 1 Fluid Ounce (US) in Cup (US)?
1 Fluid Ounce (US) = 0.123223 Cup (US).
How do I convert Fluid Ounce (US) to Cup (US)?
Enter your value in Fluid Ounce (US) into the converter above and the result in Cup (US) appears instantly. 1 fl oz equals 0.123223 cup — just multiply your value by 0.123223.
What is the formula for Fluid Ounce (US) to Cup (US)?
The formula is: value in Cup (US) = value in Fluid Ounce (US) × 0.123223. For example, 10 fl oz × 0.123223 = 1.23223 cup.
Is this Fluid Ounce (US) to Cup (US) converter free and accurate?
Yes. This Fluid Ounce (US) to Cup (US) converter is 100% free, uses the exact international conversion factor (0.123223), and works on any device with no signup.
How do I convert Cup (US) back to Fluid Ounce (US)?
To convert back, divide by 0.123223 (or multiply by 8.115365). You can also use our dedicated How Many Fluid Ounce (US) in 1 Cup (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).