Convert Fluid Ounce to Milliliter (fl oz → ml)
The US fluid ounce is the standard unit for beverage portions, cocktail recipes, and personal-care product sizes.
Fluid Ounce to Milliliter Conversion Table
10 common values| Fluid Ounce | Milliliter |
|---|---|
| 1 fl oz | 29.57353 ml |
| 2 fl oz | 59.147059 ml |
| 5 fl oz | 147.86765 ml |
| 10 fl oz | 295.7353 ml |
| 20 fl oz | 591.47059 ml |
| 50 fl oz | 1,478.6765 ml |
| 100 fl oz | 2,957.353 ml |
| 200 fl oz | 5,914.7059 ml |
| 500 fl oz | 14,786.765 ml |
| 1,000 fl oz | 29,573.53 ml |
How to Convert Fluid Ounce to Milliliter Manually
Step by StepConverting fluid ounces to milliliters is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.
- 1Take your value in fluid ouncesStart with the number of fluid ounces (fl oz) you want to convert.
- 2Multiply by 29.57353The conversion factor from fl oz to ml is 29.57353. Multiply your value by this number.
- 3Read the result in millilitersThe result is your value in milliliters (ml).
Formula
Multiply the value in fluid ounces by 29.57353. For the reverse direction, multiply by 0.033814.
ml = fl oz × 29.57353fl oz = ml × 0.033814Tips
Use these in everyday conversions- 1 US fl oz ≈ 29.6 ml; 1 UK fl oz ≈ 28.4 ml.
- 8 US fl oz ≈ 1 US cup ≈ 237 ml.
- Use ml to avoid ambiguity between US and UK fluid ounces.
Common Mistakes
Avoid these- Mixing US and UK fluid ounces — 16 fl oz (US) = 473 ml vs. 16 fl oz (UK) = 455 ml.
- Confusing fluid ounce (volume) with avoirdupois ounce (mass).
- Assuming 1 fl oz = 1 oz by weight — only true for pure water and approximately.
About Fluid Ounce and Milliliter
What is the Fluid Ounce?
The US fluid ounce equals exactly 29.5735295625 milliliters and is the standard small-volume unit for beverages, cocktails, personal-care products, and cooking in the United States. It is distinct from the (weight) ounce: 1 fluid ounce of water weighs about 1 ounce by weight at room temperature, but other liquids may weigh more or less. Soft-drink cans (12 fl oz), beer bottles (12 fl oz), shampoo bottles, and skin-cream tubs all label volume in fluid ounces. The US fluid ounce is slightly different from the UK imperial fluid ounce (28.4131 mL — about 4% smaller), reflecting the different gallon definitions. The US fl oz relates to the gallon (128 fl oz = 1 gal), the cup (8 fl oz = 1 cup), the tablespoon (2 tbsp = 1 fl oz), and the milliliter (1 fl oz ≈ 29.57 mL). Cocktail recipes universally use fluid ounces.
- US beverage and soda can sizes (12 fl oz)
- Cosmetic and personal-care product volumes
- US fluid recipes and cocktail measures
A US soda can is 12 fl oz (355 ml). A Starbucks Tall is 12 fl oz; Grande is 16; Venti is 20.
What is the Milliliter?
The milliliter equals one thousandth of a liter (0.001 L) and is the standard small-volume unit for cooking, pharmaceuticals, cosmetics, and laboratory work. One milliliter is exactly 1 cubic centimeter (1 cm³), a convenient relationship: 1 mL of pure water weighs 1 gram. The milliliter is the universal unit on medicine bottles (a typical cough syrup dose is 5 mL), cosmetics (a perfume bottle is 50–100 mL), and recipe measurements outside North America (a tablespoon is 15 mL, a teaspoon is 5 mL). Medical syringes are calibrated in mL, and IV drip rates are computed in mL per hour. The milliliter relates to the liter (1,000 mL = 1 L), the cubic centimeter (1 mL = 1 cm³ = 1 cc), the teaspoon (1 tsp = 5 mL), and the US fluid ounce (1 fl oz ≈ 29.57 mL).
- Liquid medication dosing in syringes
- Precise cooking and baking measurements
- Laboratory reagent measurement
A teaspoon holds about 5 ml. An espresso shot is 25–30 ml. An insulin pen delivers 0.1 ml increments.