Conversion table (fluid ounces to millilitres)
| Fluid ounces | US mL | Imp mL | |
|---|---|---|---|
| 1 fl oz | 29.57 | 28.41 | single pour |
| 1.5 fl oz | 44.36 | 42.62 | a shot |
| 4 fl oz | 118.29 | 113.65 | small bottle |
| 8 fl oz | 236.59 | 227.30 | 1 US cup |
| 12 fl oz | 354.88 | 340.96 | soda / beer can |
| 16 fl oz | 473.18 | 454.61 | 1 US pint |
| 20 fl oz | 591.47 | 568.26 | 1 UK pint |
| 24 fl oz | 709.76 | 681.91 | large drink |
| 32 fl oz | 946.35 | 909.22 | 1 US quart |
| 64 fl oz | 1892.71 | 1818.44 | half gallon |
How to convert oz to mL
- fl oz
- how many fluid ounces you have
- mL
- the metric amount you get back
- 29.5735
- millilitres packed into one US fluid ounce
- 28.4131
- millilitres in one Imperial (UK) fluid ounce
Pick the right ounce first. American labels and recipes mean the US fluid ounce (29.5735 mL); British, Irish and Australian ones usually mean the Imperial fluid ounce (28.4131 mL). The toggle above switches between them.
Everything here is about fluid ounces, a measure of volume. If your ounces are a weight, say 8 oz of chocolate, head to ounces to grams instead.
Frequently asked questions
How many mL is 4 oz?
4 US fluid ounces come to 118.29 mL, a size you often see on small bottles and baby bottles.
How many mL is in a shot?
A US shot is 1.5 fl oz, which works out to 44.36 mL. A plain 1 fl oz pour is 29.57 mL.
How many mL is 12 oz?
12 US fluid ounces is 354.88 mL, the amount in a standard soda or beer can.
Is a fluid ounce exactly 30 mL?
Not exactly. A US fluid ounce is 29.5735 mL, but it sits so close to 30 that nutrition labels round it up to 30 mL for serving sizes.
Why is a UK fluid ounce different from a US one?
The two systems set their ounce separately. The Imperial (UK) fluid ounce is 28.4131 mL and the US one is 29.5735 mL, so a 20 fl oz UK pint actually holds more than a 16 fl oz US pint.
Do these ounces measure weight?
No, they measure volume. For a weight in ounces, such as an 8 oz block of cheese, use the ounces to grams tool.
Related conversions
Reading a US drinks or recipe amount and want the metric size? A can is 12 fl oz (355 mL) and a US pint is 16 fl oz (473 mL). On the medical or workshop side, fl oz to cc gives the same figure under the cc label. When your "ounces" are really a weight, jump to ounces to grams or ounces to kilograms. And to run it backwards, from a metric amount to ounces, try mL to oz.