1 cup = 8 fl oz
1 US customary cup (cup) = 8 US fluid ounce (fl oz).
If you want to reverse convert, use US fluid ounce → US customary cup. 1 fl oz = 0.125 cup. You can also explore the full Volume converter page for more cross conversions.
Conversion formula
US customary cup to US fluid ounce formula: value in fl oz = value in cup × 8.
US fluid ounce to US customary cup formula: value in cup = value in fl oz × 0.125.
How to convert US customary cup to US fluid ounce
To convert US customary cup to US fluid ounce, multiply the value in cup by 8. This gives the result in fl oz.
For example, 1 cup = 8 fl oz and 10 cup = 80 fl oz.
What is US customary cup?
US customary cup (cup): The US customary cup. It is not a local drinking glass or a 250-millilitre metric cup. 1 cup ≈ 236.588 mL.
What is US fluid ounce?
US fluid ounce (fl oz): The US fluid ounce measures volume. It is not the mass ounce or the imperial fluid ounce. 1 fl oz ≈ 29.5735 mL.
FAQ
How many us fluid ounce are in 1 us customary cup?
There are 8 fl oz in 1 cup.
Why can conversion results differ slightly?
Check the unit definition and rounding. US and imperial measures can differ; rounding intermediate values can also change the final digits.
How do I convert us customary cup to us fluid ounce?
Multiply the value in cup by 8 to get the value in fl oz.
US customary cup → other Volume units
- 1 us customary cup → cubic meter = 0.000236588 cubic meter
- 1 us customary cup → cubic centimeter = 236.588 cubic centimeter
- 1 us customary cup = 236588 cubic millimeter
- 1 us customary cup → hectoliter = 0.00236588 hectoliter
- 1 us customary cup → liter = 0.236588 liter
- 1 us customary cup → deciliter = 2.36588 deciliter
- 1 us customary cup → centiliter = 23.6588 centiliter
- 1 us customary cup → milliliter = 236.588 milliliter
- 1 us customary cup → cubic feet = 0.0083550263679431 cubic feet
- 1 us customary cup → cubic inch = 14.437485567885 cubic inch
- 1 us customary cup → cubic yard = 0.00030944542111588 cubic yard
- 1 us customary cup → us liquid pint = 0.5 us liquid pint
- 1 us customary cup → us gallon = 0.062499966978478 us gallon
- 1 us customary cup → us teaspoon = 48.00016230802 us teaspoon
- 1 us customary cup → us tablespoon = 15.999729492121 us tablespoon
- 1 us customary cup → us liquid quart = 0.24999973582796 us liquid quart
- 1 us customary cup → us fluid ounce = 8 us fluid ounce
- 1 us customary cup → imperial gallon = 0.052042084516585 imperial gallon
US customary cup → US fluid ounce Table
The table below shows common values from US customary cup to US fluid ounce and the reverse direction for quick reference.
| cup | fl oz | Rounded |
|---|---|---|
| 1 cup | 8 fl oz | 8.0000 |
| 2 cup | 16 fl oz | 16.0000 |
| 3 cup | 24 fl oz | 24.0000 |
| 4 cup | 32 fl oz | 32.0000 |
| 5 cup | 40 fl oz | 40.0000 |
| 10 cup | 80 fl oz | 80.0000 |
| 12 cup | 96 fl oz | 96.0000 |
| 15 cup | 120 fl oz | 120.0000 |
| 20 cup | 160 fl oz | 160.0000 |
| 25 cup | 200 fl oz | 200.0000 |
| 30 cup | 240 fl oz | 240.0000 |
| 40 cup | 320 fl oz | 320.0000 |
| 50 cup | 400 fl oz | 400.0000 |
| 75 cup | 600 fl oz | 600.0000 |
| 100 cup | 800 fl oz | 800.0000 |
| 200 cup | 1600 fl oz | 1600.0000 |
| 250 cup | 2000 fl oz | 2000.0000 |
| 500 cup | 4000 fl oz | 4000.0000 |
| 750 cup | 6000 fl oz | 6000.0000 |
| 1000 cup | 8000 fl oz | 8000.0000 |
| 2500 cup | 20000 fl oz | 20000.0000 |
| 5000 cup | 40000 fl oz | 40000.0000 |
| 10000 cup | 80000 fl oz | 80000.0000 |
US fluid ounce → US customary cup Table
| fl oz | cup | Rounded |
|---|---|---|
| 1 fl oz | 0.125 cup | 0.1250 |
| 2 fl oz | 0.25 cup | 0.2500 |
| 3 fl oz | 0.375 cup | 0.3750 |
| 4 fl oz | 0.5 cup | 0.5000 |
| 5 fl oz | 0.625 cup | 0.6250 |
| 10 fl oz | 1.25 cup | 1.2500 |
| 12 fl oz | 1.5 cup | 1.5000 |
| 15 fl oz | 1.875 cup | 1.8750 |
| 20 fl oz | 2.5 cup | 2.5000 |
| 25 fl oz | 3.125 cup | 3.1250 |
| 30 fl oz | 3.75 cup | 3.7500 |
| 40 fl oz | 5 cup | 5.0000 |
| 50 fl oz | 6.25 cup | 6.2500 |
| 75 fl oz | 9.375 cup | 9.3750 |
| 100 fl oz | 12.5 cup | 12.5000 |
| 200 fl oz | 25 cup | 25.0000 |
| 250 fl oz | 31.25 cup | 31.2500 |
| 500 fl oz | 62.5 cup | 62.5000 |
| 750 fl oz | 93.75 cup | 93.7500 |
| 1000 fl oz | 125 cup | 125.0000 |
| 2500 fl oz | 312.5 cup | 312.5000 |
| 5000 fl oz | 625 cup | 625.0000 |
| 10000 fl oz | 1250 cup | 1250.0000 |
US fluid ounce → US customary cup
The reverse value is 1 fl oz = 0.125 cup.