20 milliliters to US fluid ounces
0.68 fl oz
20 mL = 0.68 fl oz.
US fluid ounces
0.68fl oz
20 mL = 0.68 fl oz
In short
How many US fluid ounces is 20 milliliters?
20 mL = 0.68 fl oz. 1 milliliter = 0.033814 US fluid ounces, so the working is 20 × 0.033814 = 0.68.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 milliliter = 0.033814 US fluid ounces 20 × 0.033814 = 0.68
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (fl oz) | Off by |
|---|---|---|
| Whole number | 1 | +0.32372 |
| 1 decimal | 0.7 | +0.02372 |
| 2 decimals | 0.68 | +0.00372 |
Round trip: take 0.68 fl oz back the other way and you land on 20.1100 mL — a drift of 0.1100 mL. That gap is the rounding, not the conversion.
Frequently asked questions
What is 20 milliliters in US fluid ounces?
20 milliliters is 0.68 US fluid ounces. 1 milliliter = 0.033814 US fluid ounces, so the working is 20 × 0.033814 = 0.68.
How accurate is 0.68 fl oz?
Rounding to 0.68 fl oz and converting straight back gives 20.1100 mL, a drift of 0.1100 mL from the 20 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
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