1,000 milliliters to US fluid ounces
33.81 fl oz
1,000 mL = 33.81 fl oz.
US fluid ounces
33.81fl oz
1,000 mL = 33.81 fl oz
In short
How many US fluid ounces is 1,000 milliliters?
1,000 mL = 33.81 fl oz. 1 milliliter = 0.033814 US fluid ounces, so the working is 1,000 × 0.033814 = 33.81.
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 1,000 × 0.033814 = 33.81
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 | 34 | +0.18598 |
| 1 decimal | 33.8 | −0.01402 |
| 2 decimals | 33.81 | −0.00402 |
Round trip: take 33.81 fl oz back the other way and you land on 999.8810 mL — a drift of 0.1190 mL. That gap is the rounding, not the conversion.
Frequently asked questions
What is 1,000 milliliters in US fluid ounces?
1,000 milliliters is 33.81 US fluid ounces. 1 milliliter = 0.033814 US fluid ounces, so the working is 1,000 × 0.033814 = 33.81.
How accurate is 33.81 fl oz?
Rounding to 33.81 fl oz and converting straight back gives 999.8810 mL, a drift of 0.1190 mL from the 1,000 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
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