mL to oz Converter
Milliliters to fluid ounces — US or UK.
How to convert mL to fluid ounces
US fl oz = mL ÷ 29.5735295625. UK fl oz = mL ÷ 28.4130625.
A US customary fluid ounce contains exactly 29.5735295625 mL; an imperial fluid ounce contains exactly 28.4130625 mL. A smaller fluid ounce means more ounces for the same volume.
For example, 250 mL is about 8.4535 US fl oz or 8.7988 UK fl oz. The result and copied text keep the chosen standard visible. Changing US/UK recalculates the entered number under the new standard; Swap preserves the converted volume in the same standard.
Milliliters to fluid ounces chart
Each row shows the same volume using both standards, rounded to four decimal places.
| mL | US fl oz | UK fl oz |
|---|---|---|
| 1 | 0.0338 | 0.0352 |
| 5 | 0.1691 | 0.176 |
| 15 | 0.5072 | 0.5279 |
| 30 | 1.0144 | 1.0559 |
| 50 | 1.6907 | 1.7598 |
| 100 | 3.3814 | 3.5195 |
| 150 | 5.0721 | 5.2793 |
| 200 | 6.7628 | 7.039 |
| 250 | 8.4535 | 8.7988 |
| 330 | 11.1586 | 11.6144 |
| 500 | 16.907 | 17.5975 |
| 750 | 25.3605 | 26.3963 |
| 1000 | 33.814 | 35.1951 |
Paste a measurement, keep its meaning
Enter a number, fraction such as 1/2, or mixed number such as 1 1/2. A suffix sets the source unit: 100 mL converts to fluid ounces; 8 fl oz converts to milliliters using your selected standard. Paste 8 US fl oz or 8 UK fl oz to specify both the source unit and standard.
Plain oz is ambiguous, so enter fl oz for liquid volume. No ingredient density, medication dose, nutrition-label rounding or package allowance is inferred. Values must be nonnegative, finite and no larger than one trillion. Calculations use browser floating-point arithmetic; displayed rounding does not add measurement accuracy.
Frequently asked questions
How do I convert mL to oz?
For US fluid ounces, divide milliliters by 29.5735295625. For UK imperial fluid ounces, divide by 28.4130625. This converts liquid volume, not weight ounces.
How many ounces is 100 mL?
100 mL is about 3.3814 US fl oz or 3.5195 UK fl oz. Select the standard printed on your recipe or container.
Is 30 mL the same as 1 oz?
It is a convenient approximation for one US fluid ounce, but not an exact conversion: 1 US fl oz is 29.5735295625 mL. Nutrition-label rounding is different from exact customary-unit conversion.
Can I convert ounces back to mL?
Yes. Choose fl oz as the source, paste a measurement such as 8 fl oz, or use Swap. A pasted US or UK prefix selects that standard explicitly.
Can this convert flour or water to ounces of weight?
No. Fluid ounces measure volume; weight ounces measure mass. To convert a volume to weight, you also need the ingredient's density. The converter rejects plain oz so it cannot silently treat a weight as a volume.