20 Ounces to ml
20 US fluid ounces is 591.5 ml; 20 UK fluid ounces is 568.3 ml.
20 fl oz is
591 ml
591.5 ml exactly · 568.3 ml in UK fl oz
To measure 20 fl oz
2½ cups
What 20 fl oz weighs
| Ingredient | Grams | Ounces |
|---|---|---|
| Water | 590 g | 20.8 oz |
| Milk | 613 g | 21.6 oz |
| All-Purpose Flour | 313 g | 11 oz |
| Granulated Sugar | 500 g | 17.6 oz |
| Vegetable Oil | 545 g | 19.2 oz |
US cups, filled level (dry ingredients spooned in); weights reviewed August 15, 2026. Every ingredient’s weight per cup · How we calculate
Nearby amounts
Every amount, with a converter: ounces to ml chart.
Questions
How many ml is 20 fl oz?
20 US fluid ounces is 591.5 ml; 20 UK fluid ounces is 568.3 ml.
Is a US fluid ounce the same as a UK fluid ounce?
No. A US fluid ounce is 29.6 ml (29.5735 ml exactly) and a UK (imperial) fluid ounce is 28.4 ml (28.4131 ml), about 4% smaller. US recipes, nutrition labels and bottles sold in the US mean the US fluid ounce; older British recipes mean the UK one.
How do I measure 20 fl oz with cups and spoons?
Use 2½ cups. Level each cup and spoon with a knife.
How much does 20 fl oz weigh?
It depends on what fills it: 20 fl oz of water weighs 590 g, of all-purpose flour 313 g and of granulated sugar 500 g.