Fluid Ounce (UK) to Fluid Ounce (US) Converter
Unit Converter
Instant · Precise · Universal
47 units available
6 categories total
How to Convert Fluid Ounce (UK) to Fluid Ounce (US)
To mL: multiply by 28.4131. To US fl oz: multiply by 0.96076. To UK pints: divide by 20.
1 UK fl oz = 1/20 UK pt = 1/160 UK gal ≈ 28.4131 mL. It is about 4% smaller than a US fluid ounce.
For example, 1 Fluid Ounce (UK) (fl oz (UK)) = 0.9607599392 Fluid Ounce (US) (fl oz (US)).
Fluid Ounce (UK) to Fluid Ounce (US) — Common Values
| Fluid Ounce (UK) (fl oz (UK)) | Fluid Ounce (US) (fl oz (US)) |
|---|---|
| 0.1 | 0.09607599392 |
| 0.5 | 0.4803799696 |
| 1 | 0.9607599392 |
| 2 | 1.921519878 |
| 5 | 4.803799696 |
| 10 | 9.607599392 |
| 25 | 24.01899848 |
| 50 | 48.03799696 |
| 100 | 96.07599392 |
| 500 | 480.3799696 |
| 1000 | 960.7599392 |
About Fluid Ounce (UK) (fl oz (UK))
Definition
The UK fluid ounce is a unit of liquid volume equal to 1/160 of an imperial gallon, or approximately 28.413 milliliters.
Mathematical Relationship
1 UK fl oz = 1/20 UK pt = 1/160 UK gal ≈ 28.4131 mL. It is about 4% smaller than a US fluid ounce.
Conversion Formula
To mL: multiply by 28.4131. To US fl oz: multiply by 0.96076. To UK pints: divide by 20.
Practical Applications
Older UK recipes, some beverage labels in Commonwealth countries, and traditional pharmaceutical dosing.
Interesting Facts
Paradoxically, the UK fluid ounce is smaller than the US fluid ounce (28.41 vs. 29.57 mL), even though UK pints and gallons are larger.
Common Mistakes
Assuming UK and US fluid ounces are the same — they differ by about 4%. This seems small but accumulates in recipes.
Educational Tips
UK fl oz ≈ 28.4 mL, US fl oz ≈ 29.6 mL. The UK has more fl oz per pint (20) vs. US (16), but each UK fl oz is smaller.
About Fluid Ounce (US) (fl oz (US))
Definition
The US fluid ounce is a unit of liquid volume equal to 1/128 of a US gallon, or approximately 29.574 milliliters.
Mathematical Relationship
1 US fl oz = 2 US tbsp = 6 US tsp = 1/8 US cup = 29.5735 mL.
Conversion Formula
To mL: multiply by 29.5735. To UK fluid ounces: multiply by 1.04084. To tablespoons (US): multiply by 2.
Practical Applications
Beverage cans (12 fl oz), water bottles (16.9 fl oz), coffee sizes, medicine dosing, and shampoo bottles.
Interesting Facts
A US fluid ounce of water weighs almost exactly 1 avoirdupois ounce (29.57 mL ≈ 28.35 g). The UK fl oz is slightly smaller (28.41 mL).
Common Mistakes
Confusing fluid ounces (volume) with ounces (weight). Also, US and UK fluid ounces differ slightly.
Educational Tips
1 fl oz ≈ 30 mL (close enough). A soda can = 12 fl oz. A standard water bottle = 16.9 fl oz ≈ 500 mL.