This ml to oz converter provides 3 main benefits: instant precision measurement with up to 6 decimal places, support for both US and Imperial fluid ounces, and ready-made conversion tables for baking recipes, medicine dosing, and science lab measurement. The conversion calculator covers the formula for ml to oz conversion, the formula for oz to ml conversion, worked examples, and a full conversion table from milliliters to fluid ounces.
View Formulas & TablesA milliliter (mL) is a unit of volume in the Metric System equal to one-thousandth of a liter (0.001 L). The International System of Units (SI) defines the milliliter as the standard unit for liquid measurement in science, medicine, and daily commerce across most countries.
One milliliter equals 0.033814 US fluid ounces (fl oz) and 0.035195 Imperial fluid ounces. In laboratory settings, milliliters are measured with a graduated cylinder for precision measurement of liquid ingredients.
A fluid ounce (fl oz) is a unit of volume used in the Imperial System and US Customary Units for measuring liquid volume. One US fluid ounce equals 29.5735 milliliters, and one Imperial (UK) fluid ounce equals 28.4131 milliliters.
Fluid ounces are used for beverage servings, cooking measurements, and food labeling in the United States and the United Kingdom. Fluid ounces measure volume — not weight — and should not be confused with avoirdupois ounces (mass).
The diagram below shows the relative size difference between 1 milliliter and 1 US fluid ounce. 1 fl oz contains 29.57× more liquid than 1 mL. Drag the slider to compare different volumes.
There are 5 main differences between ounces and milliliters that affect how to convert ml to oz accurately.
| Factor | Milliliter (mL) | Fluid Ounce (fl oz) |
|---|---|---|
| Measurement System | Metric System / International System of Units (SI) | Imperial System / US Customary Units |
| Base Relationship | 1 mL = 0.001 liters (L) | 1 US fl oz = 1/128 gallon = 29.5735 mL |
| Global Usage | Standard in 190+ countries worldwide | Primarily used in the US, UK, and a few former British colonies |
| Precision Level | Higher precision for scientific measurements and medicine dosing with graduated cylinder | Common for cooking measurements, beverage servings, and food labeling |
| Typical Context | Pharmaceuticals, science lab measurement, recipe scaling in metric countries | Baking recipes, beverage servings, infant formula in the US and UK |
The primary difference between ounces and milliliters is the measurement system. Milliliters belong to the Metric System used globally, and fluid ounces belong to the Imperial System and US Customary Units used in a smaller number of countries. Converting between the two systems requires the conversion factor of 1 fl oz = 29.5735 mL (US) or 1 fl oz = 28.4131 mL (UK).
To convert milliliters to fluid ounces, multiply the mL value by 0.033814 for US fluid ounces, or multiply by 0.035195 for Imperial (UK) fluid ounces.
To convert fluid ounces to milliliters, multiply the fl oz value by 29.5735 for US fluid ounces, or multiply by 28.4131 for Imperial (UK) fluid ounces.
There are 8 common ml to oz conversion examples used for cooking measurements, medicine dosing, and essential oils. Click any example to see the step-by-step calculation.
There are 7 common oz to ml conversion examples used for recipe scaling, beverage servings, and infant formula preparation. Click any example to see the calculation.
The conversion table below shows 15 common milliliter to fluid ounce values for both US and Imperial fluid ounces. Click any row to load the value in the converter.
| Milliliters (mL) | US Fluid Ounces (fl oz) | Imperial Fluid Ounces (fl oz) | Common Use |
|---|
The conversion table below shows 14 common fluid ounce to milliliter values using both the US and Imperial conversion factors. Click any row to load the value in the converter.
| US Fluid Ounces (fl oz) | Milliliters (mL) | Imperial mL Equivalent | Common Use |
|---|
The US fluid ounce and the Imperial (UK) fluid ounce differ in volume by 4.08%. One US fl oz equals 29.5735 mL, and one Imperial fl oz equals 28.4131 mL.
There are 6 standard abbreviations used for volume measurement in recipes, product labels, and scientific documents.
Milliliters serve as the global standard for liquid measurement in 190+ countries that use the Metric System. Pharmacies prescribe medicine in mL, laboratories record experiment results in mL using graduated cylinders, and food products sold outside the US display mL on labels. The International System of Units (SI) recognizes the milliliter as the accepted unit for precision measurement of liquids at room temperature.
Fluid ounces remain the primary liquid measurement in the United States for cooking measurements, beverage servings, and food labeling. The United Kingdom uses fluid ounces alongside milliliters on product labels. Countries including Canada, Australia, and New Zealand officially use the Metric System but still reference fluid ounces in informal recipe scaling. Nutrition labels in the US list serving sizes in fl oz (for liquids) and mL in parentheses.
Accurate conversion between mL and fl oz matters in 4 main areas: baking recipes that switch between metric and imperial, medicine dosing where a 1 mL error changes the dose, infant formula preparation that requires precision measurement, and scientific measurements in laboratory settings. Use this unit converter to avoid common conversion errors between the Metric System and Imperial System.
29.5735 mL equals 1 US fluid ounce (fl oz), and 28.4131 mL equals 1 Imperial (UK) fluid ounce. The US fluid ounce is 4.08% larger than the Imperial fluid ounce. Multiply the fluid ounce value by 29.5735 to convert oz to ml for US measurements, or multiply by 28.4131 for UK measurements.
0.033814 US fl oz equals 1 milliliter (mL), and 0.035195 Imperial fl oz equals 1 mL. Multiply the mL value by 0.033814 to convert ml to oz. One milliliter is a small volume — roughly equal to 20 drops of water at room temperature.
To convert 8 oz to ml, multiply 8 by 29.5735. The result is 236.588 mL. Eight US fluid ounces equals 1 US cup (236.588 mL or approximately 0.237 liters). This conversion is standard for cooking measurements, beverage servings, and recipe scaling from US Customary Units to the Metric System.
No, 30 mL equals 1.0144 US fl oz, not exactly 1 fl oz. One US fluid ounce equals 29.5735 mL, so 30 mL is 0.4265 mL more than 1 fl oz. The difference is small enough for baking recipes, but it matters for medicine dosing, scientific measurements, and infant formula preparation where precision measurement is needed.
2 tablespoons (tbsp) equal 1 US fluid ounce. One tablespoon equals 15 mL (0.5 fl oz), and one teaspoon (tsp) equals 5 mL (0.1691 fl oz). For cooking measurements: 1 fl oz = 2 tbsp = 6 tsp = 29.5735 mL. These conversion values apply to US Customary Units for baking recipes and liquid ingredients.
Use the US fluid ounce (29.5735 mL) for American recipes, US food labels, and products sold in the United States. Use the Imperial fluid ounce (28.4131 mL) for British recipes, UK product labels, and older cookbooks from Australia, Canada, or New Zealand. The source of the recipe or product label determines which fluid ounce system to use. This conversion calculator uses US fluid ounces by default.