9 US fluid ounces to milliliters
266.16 mL
9 fl oz = 266.16 mL.
milliliters
266.16mL
9 fl oz = 266.16 mL
In short
How many milliliters is 9 US fluid ounces?
9 fl oz = 266.16 mL. 1 US fluid ounce = 29.573530 milliliters, so the working is 9 × 29.573530 = 266.16.
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 US fluid ounce = 29.573530 milliliters 9 × 29.573530 = 266.16
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 (mL) | Off by |
|---|---|---|
| Whole number | 266 | −0.16177 |
| 1 decimal | 266.2 | +0.03823 |
| 2 decimals | 266.16 | −0.00177 |
Round trip: take 266.16 mL back the other way and you land on 8.9999 fl oz — a drift of 0.0001 fl oz. That gap is the rounding, not the conversion.
Frequently asked questions
What is 9 US fluid ounces in milliliters?
9 US fluid ounces is 266.16 milliliters. 1 US fluid ounce = 29.573530 milliliters, so the working is 9 × 29.573530 = 266.16.
How accurate is 266.16 mL?
Rounding to 266.16 mL and converting straight back gives 8.9999 fl oz, a drift of 0.0001 fl oz from the 9 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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Fluid Ounces to mL Converter
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