18 Fluid Ounce (UK) to Fluid Ounce (US)
Quick answer
18 Fluid Ounce (UK) (fl oz (UK)) equals
17.293679 fl oz
To convert 18 Fluid Ounce (UK)s to Fluid Ounce (US)s, multiply by 0.9607599404. Therefore, 18 Fluid Ounce (UK) (fl oz (UK)) equals 17.293679 Fluid Ounce (US) (fl oz).
Formula: fl oz = fl oz (UK) × 0.9607599404. Calculation: 18 × 0.9607599404 = 17.293679 fl oz.
Convert Fluid Ounce (UK) (fl oz (UK)) to Fluid Ounce (US) (fl oz) online with our free unit converter. In volume, 1 fl oz (UK) = 0.96076 fl oz. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Fluid Ounce (UK) to Fluid Ounce (US)
- Step 1 — start with the formula. fl oz = fl oz (UK) × 0.9607599404
- Step 2 — substitute your figure. 18 fl oz (UK) × 0.9607599404
- Step 3 — read the result. 18 fl oz (UK) = 17.293679 fl oz
- Step 4 — check it in reverse. fl oz (UK) = fl oz × 1.0408427308 returns 18 fl oz (UK), which matches the figure you started with.
Volume Converter
40 units available
18 fl oz (UK) = 17.293679 fl oz
Formula:
fl oz = fl oz (UK) × 0.9607599404With your value: 18 fl oz (UK) = 17.29367893 fl oz
How big is that?
Everyday references on a logarithmic scale, all expressed in fluid ounce (uk) so you can sanity-check the result.
Other Fluid Ounce (UK) to Fluid Ounce (US) conversions
Fluid Ounce (UK) to Fluid Ounce (US) Conversion Table
| Fluid Ounce (UK) (fl oz (UK)) | Fluid Ounce (US) (fl oz) |
|---|---|
| 0.5 | 0.48038 |
| 1 | 0.96076 |
| 2 | 1.92152 |
| 5 | 4.8038 |
| 10 | 9.607599 |
| 15 | 14.411399 |
| 20 | 19.215199 |
| 25 | 24.018999 |
| 50 | 48.037997 |
| 100 | 96.075994 |
| 250 | 240.189985 |
| 500 | 480.37997 |
| 1000 | 960.75994 |
Fluid Ounce (US) to Fluid Ounce (UK) Conversion Table
| Fluid Ounce (US) (fl oz) | Fluid Ounce (UK) (fl oz (UK)) |
|---|---|
| 0.5 | 0.520421 |
| 1 | 1.040843 |
| 2 | 2.081685 |
| 5 | 5.204214 |
| 10 | 10.408427 |
| 15 | 15.612641 |
| 20 | 20.816855 |
| 25 | 26.021068 |
| 50 | 52.042137 |
| 100 | 104.084273 |
| 250 | 260.210683 |
| 500 | 520.421365 |
| 1000 | 1,040.842731 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Fluid Ounce (UK) (fl oz (UK))
Volume
Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Fluid Ounce (US) (fl oz)
Volume
Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Fluid Ounce (UK) to Fluid Ounce (US)
To convert from Fluid Ounce (UK) (fl oz (UK)) to Fluid Ounce (US) (fl oz), multiply the value by 0.9607599404.
Formula: fl oz = fl oz (UK) × 0.9607599404
Reverse: fl oz (UK) = fl oz × 1.0408427308
Step-by-Step Example
- Start with your value in Fluid Ounce (UK). For example: 5 fl oz (UK)
- Multiply by the conversion factor: 5 x 0.9607599404
- The result is: 4.8038 fl oz
Fluid Ounce (UK) and Fluid Ounce (US) Relationship
Both Fluid Ounce (UK) and Fluid Ounce (US) belong to the US Customary / Imperial system, making this an intra-system conversion within volume. Since 1 Fluid Ounce (UK) represents a fraction of a Fluid Ounce (US) (1 Fluid Ounce (US) ≈ 1.0408 Fluid Ounce (UK)s), the Fluid Ounce (US) is the larger measurement interval. Understanding the relationship between Fluid Ounce (UK) and Fluid Ounce (US) is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About Fluid Ounce (UK)
The Fluid Ounce (UK) (symbol: fl oz (UK)) is a recognized unit in the US Customary / Imperial measurement framework, utilized within volume applications for precision and standardized data representation.
Common uses of Fluid Ounce (UK): volume calculations, engineering and science, education.
About Fluid Ounce (US)
The US fluid ounce equals approximately 29.57 mL. It is commonly used for beverage and liquid measurements.
Common uses of Fluid Ounce (US): beverages, cooking, cocktails.
Frequently Asked Questions
- What is 18 Fluid Ounce (UK) in Fluid Ounce (US)?
- 18 Fluid Ounce (UK) equals 17.293679 Fluid Ounce (US).
- How many Fluid Ounce (US)s are in 1 Fluid Ounce (UK)?
- There are exactly 0.9607599404 Fluid Ounce (US)s in 1 Fluid Ounce (UK). This means the conversion factor from Fluid Ounce (UK) to Fluid Ounce (US) is 0.9607599404.
- What is the formula to convert Fluid Ounce (UK) to Fluid Ounce (US)?
- The formula to convert Fluid Ounce (UK) to Fluid Ounce (US) is: fl oz = fl oz (UK) × 0.9607599404. For example, to convert 10 Fluid Ounce (UK)s to Fluid Ounce (US)s, you would multiply 10 by 0.9607599404.
- What is a Fluid Ounce (UK)?
- The Fluid Ounce (UK) (symbol: fl oz (UK)) is a recognized unit in the US Customary / Imperial measurement framework, utilized within volume applications for precision and standardized data representation.
- What is a Fluid Ounce (US)?
- The US fluid ounce equals approximately 29.57 mL. It is commonly used for beverage and liquid measurements.
- What are the common uses of Fluid Ounce (UK)?
- The Fluid Ounce (UK) is commonly used in volume calculations, engineering and science, education.
Related Volume Conversions
Cite this page
UnitConvertLab. (2026). 18 Fluid Ounce (UK) to Fluid Ounce (US). UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/18-fluid_ounce_uk-to-fluid_ounce_us