20 US fl oz to US cup — 20 US fluid ounces in US cups
Exact 20 ÷ 8 = 2.5
20 US fluid ounces in other units
| Millilitres | 591.470591 | mL |
|---|---|---|
| Litres | 0.59147059 | L |
| Cubic metres | 0.000591470591 | m³ |
| US teaspoons | 120 | tsp |
| US tablespoons | 40 | tbsp |
| US cups | 2.5 | US cup |
| US pints | 1.25 | US pt |
| US quarts | 0.625 | US qt |
| US gallons | 0.15625 | US gal |
| Imperial fluid ounces | 20.816855 | imp fl oz |
| Imperial pints | 1.040843 | imp pt |
| Imperial gallons | 0.13010534 | imp gal |
| Cubic feet | 0.02088759 | ft³ |
| Cubic inches | 36.09375 | in³ |
| Oil barrels | 0.003720238095 | bbl |
US fl oz to US cup at a glance
| US fluid ounces | US cups |
|---|---|
| 1 US fl oz | 0.125 US cup |
| 2 US fl oz | 0.25 US cup |
| 3 US fl oz | 0.375 US cup |
| 5 US fl oz | 0.625 US cup |
| 10 US fl oz | 1.25 US cup |
| 20 US fl oz | 2.5 US cup |
| 25 US fl oz | 3.125 US cup |
| 50 US fl oz | 6.25 US cup |
| 100 US fl oz | 12.5 US cup |
| 250 US fl oz | 31.25 US cup |
| 500 US fl oz | 62.5 US cup |
| 1,000 US fl oz | 125 US cup |
How to convert US fluid ounces to US cups
Multiply by 0.125 — one US fluid ounce is 0.125 US cups. That factor is exact: it comes from the definition of the units rather than from a measurement, so it will not change and does not need rounding.
Working 20 ÷ 8 = 2.5
In words: about three US cups.
What these units are
The US fluid ounce and the US cup are covered in the volume unit guide, along with every other unit on this page.
Questions
How many US cups are in a US fluid ounce?
One US fluid ounce is 0.125 US cups. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 20 US fluid ounces in US cups?
20 US fluid ounces is 2.5 US cups. The working is 20 ÷ 8 = 2.5.
Is a gallon the same in the US and the UK?
No. A US gallon is 3.785411784 litres; an Imperial gallon is 4.54609 litres. The Imperial one is about 20% larger, which is why US and UK fuel economy figures for the same car look different.
Which pint does a recipe mean?
Follow the recipe's origin. A US pint is 16 US fluid ounces, roughly 473 mL. An Imperial pint is 20 Imperial fluid ounces, roughly 568 mL. A British pint of milk is noticeably more than an American one.
Can I convert litres to kilograms here?
Not directly — that depends on what you are measuring. Volume becomes mass only once you know the density. Water is the convenient case: one litre is almost exactly one kilogram. Oil, flour and alcohol are all lighter.
Why is a US cup not 250 mL?
The US legal cup is 240 mL and the customary cup used in recipes is about 236.6 mL. The round 250 mL cup is the Australian and metric standard. In baking the gap is enough to notice.