Convert Fluid Ounce (US) to US cups
Americas · Cooking Measures · active · modern
Conventional value The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact.
1 Fluid Ounce (US) = 0.125 US cups
US cups = Fluid Ounce (US) × 0.12499988
Convert any amount
Fluid Ounce (US) to US cups table
| Fluid Ounce (US) | US cups |
|---|---|
| 0.25 Fluid Ounce (US) | 0.03125 US cups |
| 0.5 Fluid Ounce (US) | 0.0624999 US cups |
| 1 Fluid Ounce (US) | 0.125 US cups |
| 2 Fluid Ounce (US) | 0.25 US cups |
| 3 Fluid Ounce (US) | 0.375 US cups |
| 4 Fluid Ounce (US) | 0.5 US cups |
| 5 Fluid Ounce (US) | 0.624999 US cups |
| 10 Fluid Ounce (US) | 1.25 US cups |
| 20 Fluid Ounce (US) | 2.5 US cups |
| 25 Fluid Ounce (US) | 3.125 US cups |
| 50 Fluid Ounce (US) | 6.24999 US cups |
| 100 Fluid Ounce (US) | 12.5 US cups |
About the Fluid Ounce (US)
US fl oz = 29.57ml.
- Symbol
- fl oz
- Value in SI
- 1 Fluid Ounce (US) = 0.0295735 litre
- Typical use
- cooking
- Source
- UnitConvertLab measurement atlas
Every atlas conversion routes through the SI litre. See our methodology and data provenance pages for how these values are sourced and verified.
Related units and variant risk
Other cooking measures units in the Americas family, least settled first. If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.
Related conversions
Frequently asked
How many US cups are in a Fluid Ounce (US)?
1 Fluid Ounce (US) = 0.125 US cups. Multiply the number of Fluid Ounce (US) by 0.12499988 to get US cups.
What is Fluid Ounce (US) used for?
US fl oz = 29.57ml. It is classified as active and dates from the modern period.
Is the Fluid Ounce (US) value exact?
Yes for practical purposes. UnitConvertLab converts every atlas unit through the SI litre, so the arithmetic itself introduces no rounding beyond the digits shown.
How reliable is this Fluid Ounce (US) conversion?
Conventional value — The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact. Source: UnitConvertLab measurement atlas.
Cite this page
UnitConvertLab. (2026). Convert Fluid Ounce (US) to US cups. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/fl-oz-us-to-us-cup
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