Cup (US) to Fluid Ounce (US) Converter
Convertisseur de Volume Gratuit, Convertissez Litres, Gallons, Onces Liquides, Tasses et Millilitres
Cup (US)
- Symbol
- cup
- System
- Metric/Imperial
- Dimension
- Various
Fluid Ounce (US)
- Symbol
- fl oz
- System
- Metric/Imperial
- Dimension
- Various
Quick Reference Table
| Cup (US) | Fluid Ounce (US) | Fluid Ounce (US) | Cup (US) |
|---|---|---|---|
| 1 | 8 | 1 | 0.125 |
| 2 | 16 | 2 | 0.25 |
| 3 | 24 | 3 | 0.375 |
| 5 | 40 | 5 | 0.625 |
| 10 | 80 | 10 | 1.25 |
| 25 | 200 | 25 | 3.125 |
| 50 | 400 | 50 | 6.25 |
| 100 | 800 | 100 | 12.5 |
| 500 | 4000 | 500 | 62.5 |
| 1000 | 8000 | 1000 | 125 |
Conversion Formula
Fluid Ounce (US) = Cup (US) × 8
Cup (US) = Fluid Ounce (US) × 0.125
Factors are from BIPM SI brochure and NIST SP 811, stored unrounded and computed via a base unit. Reverse factor is 1 ÷ 8.
How to convert Cup (US) to Fluid Ounce (US)
Multiply the value in cup (us) by 8 to get fluid ounce (us). For example, 5 Cup (US) = 40 Fluid Ounce (US). All results in the volume converter update instantly as you type, so you can see every unit at once without manual math.
Common mistakes
Do not round the factor to 8 too early — keep full precision until the final display. For volume, always verify critical calculations (medicine, engineering) with a second source.
FAQ
- How many Fluid Ounce (US) in 1 Cup (US)?
- 1 Cup (US) = 8 Fluid Ounce (US).
- How many Cup (US) in 1 Fluid Ounce (US)?
- 1 Fluid Ounce (US) = 0.125 Cup (US).
- What is the source?
- BIPM/NIST via OmniConverter base-unit engine. Source table and formula above are exact.
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