Fluid Ounces to Milliliters (oz to mL)
Multiply US fluid ounces by 29.5735295625 to get milliliters. 8 fl oz (one US cup) is 236.6 mL, and a 12 fl oz can is 354.9 mL. For a UK imperial fluid ounce use 28.41 mL instead.
Convert oz to mL
Result
oz to mL
8 fl oz = 236.588 mL
1 fl oz = 29.5735 mL · 1 mL = 0.033814 fl oz
Show the mathHow it was calculated
mL = fl oz × 29.5735295625
Uses exact legal definitions; results are rounded to 6 significant figures for display. Ounces, cups and gallons are US customary units unless noted.
How to convert oz to mL
mL = fl oz × 29.5735295625
One US fluid ounce is exactly 29.5735295625 milliliters, so multiply by 29.5735295625.
Worked example: converting 8 fl oz:
- mL = fl oz × 29.5735295625
- 8 fl oz × 29.5735295625 = 236.588 mL
Oz to mL conversion table
Common values, each computed with the exact formula and rounded to 6 significant figures.
| US fluid ounces (fl oz) | Milliliters (mL) |
|---|---|
| 0.25 fl oz | 7.39338 mL |
| 0.5 fl oz | 14.7868 mL |
| 1 fl oz | 29.5735 mL |
| 1.5 fl oz | 44.3603 mL |
| 2 fl oz | 59.1471 mL |
| 3 fl oz | 88.7206 mL |
| 3.4 fl oz | 100.55 mL |
| 4 fl oz | 118.294 mL |
| 5 fl oz | 147.868 mL |
| 6 fl oz | 177.441 mL |
| 7 fl oz | 207.015 mL |
| 8 fl oz | 236.588 mL |
| 10 fl oz | 295.735 mL |
| 12 fl oz | 354.882 mL |
| 16 fl oz | 473.176 mL |
| 16.9 fl oz | 499.793 mL |
| 20 fl oz | 591.471 mL |
| 24 fl oz | 709.765 mL |
| 25.4 fl oz | 751.168 mL |
| 32 fl oz | 946.353 mL |
| 33.8 fl oz | 999.585 mL |
| 40 fl oz | 1,182.94 mL |
| 48 fl oz | 1,419.53 mL |
| 64 fl oz | 1,892.71 mL |
| 128 fl oz | 3,785.41 mL |
Quick reference: everyday US fluid ounces in milliliters
One US fluid ounce
1 fl oz = 29.5735 mL
TSA carry-on liquid limit
3.4 fl oz = 100.55 mL
One US cup
8 fl oz = 236.588 mL
Standard US soda can
12 fl oz = 354.882 mL
Common US water bottle
16.9 fl oz = 499.793 mL
One US gallon
128 fl oz = 3,785.41 mL
Kitchen measures in milliliters
US kitchen measures are all fractions of the fluid ounce. A tablespoon is ½ fl oz (14.79 mL), a teaspoon is 1/6 fl oz (4.93 mL), and a cup is 8 fl oz (236.6 mL). Metric spoons are rounded to 15 mL and 5 mL, close enough that recipes can switch between them without adjusting.
Baby bottles, medicine cups and measuring jugs are often marked in both units. The ounce marks are usually rounded to 30 mL per ounce, so the 4 oz line sits at 120 mL rather than 118.3 mL. For an infant formula ratio, use the scale printed on the bottle you're using rather than mixing units.
Drinks, bottles and travel limits
Many US bottle sizes are metric amounts in disguise. A 16.9 fl oz water bottle is really 500 mL, a 33.8 fl oz bottle is 1 liter, and wine bottles are 750 mL (25.4 fl oz). A 20 fl oz soda bottle is 591 mL. That's why sizes like '16.9' show up on US labels.
For carry-on bags, the 3.4 fl oz TSA limit converts to 100.55 mL, matching the 100 mL rule used at most airports worldwide. A 4 fl oz (118 mL) travel bottle is over the limit even if it's half empty. The rule is about the container's size, not how much is in it.
Frequently asked questions
How many mL is a UK fluid ounce?
An imperial (UK) fluid ounce is exactly 28.4130625 mL, about 4% smaller than the US fluid ounce of 29.57 mL. But the imperial pint has 20 fluid ounces against 16 in a US pint, so a UK pint (568 mL) is bigger than a US pint (473 mL), even though each UK ounce is smaller.
Can I convert ounces of weight to mL?
Not directly. Weight ounces measure mass, and mL measure volume. The link between them is the ingredient's density. For water, 1 oz by weight is about 28.3 mL. For honey it's closer to 20 mL and for flour more than 50 mL. Weigh the ingredient, or use a recipe that gives volumes.
How many ounces are in 1 liter, and in 2 liters?
1 liter is 33.81 US fl oz and 2 liters is 67.63 fl oz, a little more than a half gallon (64 fl oz). That's why a 2-liter soda bottle lasts slightly longer than a half-gallon jug. Use the liters to gallons converter for larger containers.