Fluid Ounces (US) to Milliliters (fl oz to mL)

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Fluid Ounces (US)fl oz

Milliliters

29.5735

Formula: Milliliters = Fluid Ounces (US) × 29.5735

Common Conversions

Fluid Ounces (US) (fl oz)	Milliliters (mL)
0.5	14.7867
1	29.5735
2	59.1470
3	88.7205
4	118.29
5	147.87
6	177.44
8	236.59
10	295.74
12	354.88
16	473.18
20	591.47
24	709.76
32	946.35
48	1419.53
64	1892.70
96	2839.06
128	3785.41
160	4731.76
256	7570.82

What Is Fluid Ounces (US) TO Milliliters?

To convert US fluid ounces to milliliters, multiply the fluid ounce value by 29.5735. One US fluid ounce equals approximately 29.574 mL. For example, 8 fluid ounces (one US cup) equals about 236.59 mL. This conversion is one of the most frequently needed in kitchens worldwide. American recipes specify liquid ingredients in fluid ounces and cups, but cooks using metric measuring equipment need milliliter equivalents. A standard US water bottle is often 16.9 fl oz (about 500 mL), and a can of soda is 12 fl oz (about 355 mL). In the pharmaceutical industry, US-manufactured liquid medications list dosages in fluid ounces for domestic sale but must convert to milliliters for international distribution. Baby formula preparation is another common application — American pediatric guidelines may reference fluid ounces while metric-system parents and international guidelines use milliliters. The beauty and fragrance industry also relies on this conversion extensively, as perfume concentrations are typically formulated in milliliters but US retail packaging lists fluid ounces. Understanding that 1 fl oz is close to 30 mL provides a convenient mental shortcut for everyday estimations.

Formula

To convert US fluid ounces to milliliters, multiply by 29.5735. This conversion factor comes from the definition of a US fluid ounce as 1/128 of a US gallon (3785.41 mL / 128 = 29.5735 mL). Worked example: 16 fl oz x 29.5735 = 473.18 mL. For quick mental math, multiply the fluid ounce value by 30 — for 16 fl oz, 16 x 30 = 480 mL, close to the actual 473 mL. This slight overestimate (about 1.4%) is acceptable for rough kitchen measurements.

Best For:

Converting American recipes from fluid ounces to milliliters for metric kitchens
Preparing baby formula with accurate milliliter measurements from fluid ounce guidelines
Translating US pharmaceutical dosages into milliliters for international markets
Comparing US beverage container sizes to metric equivalents
Formulating perfumes and cosmetics using milliliter precision from fluid ounce specifications

How to Fluid Ounces (US) TO Milliliters

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Frequently Asked Questions

One US fluid ounce equals approximately 29.574 mL. A quick approximation is 30 mL per fluid ounce.

8 US fluid ounces equals approximately 236.59 mL. This is the standard US cup measurement.

Not exactly. 500 mL equals about 16.91 fl oz, while 16 fl oz equals about 473.18 mL. They are close but not identical.

A US fluid ounce is about 29.574 mL, while an imperial fluid ounce is about 28.413 mL. The US fluid ounce is approximately 4% larger.

One liter contains approximately 33.814 US fluid ounces. This is why a 1-liter bottle is slightly larger than a US quart (32 fl oz).