250 mL to fl oz
- Milliliters (mL)
- 250 mL
- US fluid ounces
- 8.4535056755 fl oz
Checked against: Exact-fraction computation from the legal unit definitions
Milliliters to US fluid ounces converter
Convert milliliters to US fluid ounces (ml to oz) with the exact factor, a conversion chart and worked steps.
By AdminDrafted with AI writing toolsUpdated Checked examples: 3
US fluid ounces
fl oz
US fluid ounces: 8.45350567546 fl oz
- Conversion
- 250 mL = 8.4535056755 fl oz
- 1 fl oz in milliliters
- 29.57352956mL
250 mL is about 8.4535056755 fl oz. In the other direction, 1 fl oz ≈ 29.57352956 mL.
Milliliters to US fluid ounces
Ml to oz chart
| Milliliters | US fluid ounces |
|---|---|
| 5 | 0.1691 |
| 10 | 0.3381 |
| 15 | 0.5072 |
| 30 | 1.0144 |
| 50 | 1.6907 |
| 100 | 3.3814 |
| 150 | 5.0721 |
| 200 | 6.7628 |
| 250 | 8.4535 |
| 330 | 11.1586 |
| 500 | 16.907 |
| 750 | 25.3605 |
| 1000 | 33.814 |
How it's calculated S
Conversion factor
Rounded here for display; the calculation uses 50 significant digits.
Multiply
About the milliliters to US fluid ounces converter
To convert milliliters to US fluid ounces, multiply by 0.0338140227; to convert back, multiply by 29.5735295625. For example, 250 mL is about 8.453506 fl oz. Displayed factors and results may be rounded.
Milliliter markings appear on measuring jugs and small containers. Read the volume scale, not a mass label, and identify the destination's cup or fluid-ounce convention. Kitchen measures are often approximate, so the vessel's graduations may limit the useful precision.
The litre is exactly one cubic decimetre: 1 L = 1,000 mL; 1 mL = 1 cm³.
Both units are defined exactly. Calculations use 50 significant digits and round only for display.
How to convert ml to oz
Divide the milliliters by 29.5735295625, the exact volume of one US fluid ounce, or multiply by 0.033814. So 250 mL = 8.4535 US fl oz and a 500 mL bottle holds 16.907 fl oz. Use it to read a metric bottle, can or carton size in the fluid ounces printed on US labels.
Which ounce this is
The answer above is in US fluid ounces, a unit of volume equal to 1/128 of a US gallon. The gallon is 231 cubic inches and the inch is exactly 25.4 mm, so one US fluid ounce is exactly 29.5735295625 mL (NIST Handbook 44, Appendix C).
Common bottle and can sizes in fl oz
- 100 mL travel bottle: 3.38 fl oz, which is why 100 mL travel limits are printed as 3.4 oz
- 330 mL can: 11.16 fl oz
- 500 mL bottle: 16.91 fl oz
- 750 mL wine bottle: 25.36 fl oz
- 1 L carton: 33.81 fl oz
- 2 L bottle: 67.63 fl oz
ml to oz chart
| Milliliters | US fluid ounces, rounded |
|---|---|
| 15 | 0.507210 |
| 50 | 1.690701 |
| 100 | 3.381402 |
| 250 | 8.453506 |
| 500 | 16.907011 |
| 1000 | 33.814023 |
For a quick estimate, 30 mL is roughly one fluid ounce and 1 liter is about 34 fl oz.
UK labels use a smaller fluid ounce
An imperial fluid ounce is 28.4130625 mL, 1/160 of the 4.54609-liter imperial gallon (official imperial tables). The same 250 mL is therefore 8.7988 imperial fl oz but 8.4535 US fl oz.
If a British recipe or older UK label gives fluid ounces, convert with the imperial fluid ounce in the volume converter. NIST's SI conversion tables list the two ounces separately.
Mistakes to avoid
- Dividing by 30. It gives 8.33 fl oz for 250 mL instead of 8.45, about 1.4% low. The gap grows with volume: 2 L comes out as 66.67 fl oz instead of 67.63.
- Treating fluid ounces as weight. A fluid ounce measures space; an ounce on a scale measures mass. A 100 g jar of honey is not 3.4 fl oz, because honey is denser than water.
- Mixing US and imperial ounces in one comparison. Two labels that both say 8 fl oz differ by 9.28 mL if one uses imperial ounces.
To go the other way, use the oz to ml converter. For kitchen measures, ml to cups gives US cups, and the cooking converter turns volumes of ingredients into grams.
Worked examples
50 mL to fl oz
- Milliliters (mL)
- 50 mL
- US fluid ounces
- 1.6907011351 fl oz
Checked against: Exact-fraction computation from the legal unit definitions
750 mL to fl oz
- Milliliters (mL)
- 750 mL
- US fluid ounces
- 25.3605170264 fl oz
Checked against: Exact-fraction computation from the legal unit definitions
Questions
How many US fluid ounces are in one milliliter?
1 mL is about 0.0338140227 fl oz. The litre is exactly one cubic decimetre: 1 L = 1,000 mL; 1 mL = 1 cm³.
How do I convert milliliters to US fluid ounces?
Multiply by 0.0338140227: 250 mL × 0.0338140227 ≈ 8.453506 fl oz. To convert back, divide by the same factor. The factor shown may be rounded.
How can I estimate milliliters in US fluid ounces without a calculator?
Multiply by 0.034. This is 0.6% above the exact factor (about 0.0338140227), so 250 mL comes out as 8.5 fl oz instead of 8.4535 fl oz.
About this calculator
Sources
Checked against references
This calculator includes 3 worked examples with independently sourced answers. They run in the test suite, and you can run them here too.