20 fl oz to Milliliters
20 fl oz = 591.5 ml. That is the exact conversion from Fluid oz (US) to Milliliters, rounded for practical use.
20 fl oz × 29.5735 = 591.5 ml
The formula
Milliliters = Fluid oz (US) × 29.5735, so 20 × 29.5735 = 591.5 ml.
20 fl oz × 29.5735 = 591.5 ml
To convert 20 fl oz yourself, multiply by the fixed factor of 29.5735. The factor never changes, so the same arithmetic works for any quantity of Fluid oz (US) you need to express in Milliliters.
For cooking, 591.5 ml can be rounded to a convenient measuring mark without affecting the result. For dosing, labelling, or lab work, keep the full value of 591.5 ml.
Nearby values
Frequently asked questions
20 fl oz equals 591.5 ml. Multiply 20 by 29.5735 to get there.
Multiply the number of Fluid oz (US) by 29.5735. For 20 fl oz that gives 591.5 ml.
Yes for cooking, no for dosing or labelling. 20 fl oz is exactly 591.5 ml, and rounding to the nearest mark on a measuring jug is fine in a recipe. Where the printed figure has to match the contents, keep the full value.