0z to mL Converter
Convert fluid ounces to millilitres with a single input. This oz to mL calculator handles US fluid ounce to millilitre conversion instantly — no sign-up, no limits. Whether you need a quick volume conversion for cooking, medicine dosing, or liquid measurement, the result updates as you type.
0z to mL Converter
Calculator
Definition
A fluid ounce (fl oz) is a volume unit used in US customary units and the Imperial system. A millilitre (mL) is a metric volume unit equal to one-thousandth of a litre.
1 US fluid ounce = 29.5735 mL. 1 mL = 0.033814 US fluid ounces.
How It Works
Three simple steps to convert fluid ounces to millilitres with perfect accuracy.
Enter Your Value
Type any fluid ounce value into the converter. Supports whole numbers and decimals.
Apply the Formula
Our engine multiplies by the precise conversion factor: 1 fl oz = 29.5735 mL.
Get Your Result
Your millilitre value appears instantly. Copy it or explore the conversion table for more.
Ounces to Millilitres Conversion Formula
The math behind every oz to mL conversion — and how to do it by hand.
Formula for converting oz to mL
The conversion formula uses a single fixed factor. One US fluid ounce equals exactly 29.5735295625 millilitres. This number comes from the international definition of the litre and the legal definition of the US fluid ounce.
Whether you're doing a volume conversion for a recipe, a medicine dosage, or a science lab, this same factor applies every time.
How to convert ounces to millilitres manually
That's all there is to it. No complex math, no multi-step process. You multiply by one number. For a rough mental estimate: 1 oz is about 30 mL, and 3.4 oz is about 100 mL.
Common Ounce to Millilitre Conversions Table
A ready-made conversion chart for the most searched oz to mL values. Click any row to fill the converter.
| Fluid Ounces (fl oz) | Millilitres (mL) | Litres (L) | Context | |
|---|---|---|---|---|
| 1 fl oz | 29.6 mL | 0.029574 L | Single fluid ounce | |
| 2 fl oz | 59.1 mL | 0.059147 L | Standard shot glass | |
| 8 fl oz | 236.6 mL | 0.236588 L | 1 cup (236.6 mL) | |
| 12 fl oz | 354.9 mL | 0.354882 L | Standard soda can | |
| 16 fl oz | 473.2 mL | 0.473176 L | 1 US pint / water bottle | |
| 16.9 fl oz | 499.8 mL | 0.499793 L | Standard 500 mL water bottle | |
| 24 fl oz | 709.8 mL | 0.709765 L | Tall beverage container | |
| 25.4 fl oz | 751.2 mL | 0.751168 L | Wine bottle (750 mL) | |
| 32 fl oz | 946.4 mL | 0.946353 L | 1 US quart | |
| 33.81 fl oz | 1000 mL | 0.999999 L | ≈ 1 litre (1000 mL) | |
| 64 fl oz | 1892.7 mL | 1.892706 L | ½ US gallon | |
| 67.63 fl oz | 2000 mL | 1.999999 L | 2-litre soda bottle (2000 mL) | |
| 128 fl oz | 3785.4 mL | 3.785412 L | 1 US gallon |
Understanding 0z to mL Conversions
Everything you need to know about converting between fluid ounces and millilitres.
The conversion formula uses a single fixed factor. 1 US fluid ounce = 29.5735295625 millilitres. This number comes from the international definition of the litre (1,000 mL = 1 L) and the legal definition of the US fluid ounce (1/128 of a US gallon).
To convert, multiply your fluid ounce value by 29.5735. For example, 8 fl oz × 29.5735 = 236.588 mL — one standard US cup. To reverse (mL to oz), divide the mL value by 29.5735.
A US fluid ounce equals approximately 29.5735 mL, while an Imperial fluid ounce (UK) equals approximately 28.4131 mL. The Imperial fluid ounce is about 4% smaller than the US version.
This means an "8 oz" cup in the US (236.6 mL) would be labelled differently in the UK system (227.3 mL). Our converter uses the US fluid ounce by default — the most commonly searched standard worldwide.
One millilitre (mL) is exactly equal to one cubic centimetre (cm³ or cc). They are interchangeable in all practical applications.
In medicine, mL is preferred. In engineering, cm³ is more common. Either way, when converting from fluid ounces, the numeric result is the same.
0z-to-mL conversions come up constantly. Cooking: American recipes use fluid ounces and cups, but metric recipes use mL. Medicine: Dosage cups often show both oz and mL markings.
Travel: TSA allows 3.4 oz (100 mL) containers. Beverages: Comparing US and international drink sizes requires converting between oz and mL. Science: Lab measurements are always in mL.
Frequently Asked Questions
Answers to the most common oz to mL questions.
One US fluid ounce equals approximately 29.5735 millilitres (mL). This is the standard conversion used in the United States. An Imperial (UK) fluid ounce equals approximately 28.4131 mL.
Almost — 1 US fluid ounce equals 29.5735 mL, so 30 mL is very close but slightly more than 1 oz. For practical cooking and medicine dosing, 30 mL is often rounded to 1 oz.
8 US fluid ounces equals approximately 236.588 mL — the same as 1 standard US measuring cup. This is one of the most commonly searched oz to mL conversions.
16 US fluid ounces equals approximately 473.176 mL — the same as 1 US pint. This is a standard water bottle size.
500 mL equals approximately 16.907 US fluid ounces. A standard 500 mL water bottle is just slightly larger than 16 oz (1 US pint).
750 mL equals approximately 25.3605 US fluid ounces. This is the standard size of a wine bottle.
2 US fluid ounces equals approximately 59.147 mL. This is a common shot glass measurement and is also used for small travel containers.
To convert fluid ounces to millilitres, multiply the oz value by 29.5735. For example, 12 oz × 29.5735 = 354.882 mL. To reverse (mL to oz), divide by 29.5735 or multiply by 0.033814.
Fluid ounces (fl oz) are a US customary / Imperial volume unit, while millilitres (mL) are a metric volume unit. Most countries outside the US use mL. 1 fl oz (US) = 29.5735 mL.