Converting millilitres to ounces is useful when working with recipes, drinks, cosmetics, bottles and other liquid measurements.

The process is simple once you know the correct conversion factor.

However, there are two common types of fluid ounces: US and UK imperial.

ML to US Ounces Formula

The formula is:

US fl oz = ml ÷ 29.5735296

For example, converting 100 ml:

100 ÷ 29.5735296 = 3.3814

Therefore, 100 ml equals approximately 3.38 US fluid ounces.

ML to UK Ounces Formula

For UK imperial fluid ounces, use:

UK fl oz = ml ÷ 28.4130625

For example:

100 ÷ 28.4130625 = 3.5195

Therefore, 100 ml equals approximately 3.52 UK fluid ounces.

Common Conversion Examples

ML US fluid ounces
10 ml0.34
20 ml0.68
30 ml1.01
40 ml1.35
50 ml1.69
60 ml2.03
100 ml3.38
200 ml6.76
300 ml10.14
400 ml13.53
500 ml16.91
750 ml25.36

Can You Use 30 ML Instead of One Ounce?

For everyday estimates, 30 ml is often treated as approximately one US fluid ounce.

However, the exact US measurement is 29.5735 ml.

For more precise calculations, use the exact conversion factor.

Can You Convert ML into Dry Ounces?

Not directly. Millilitres measure volume, while dry ounces generally measure weight.

You need the density of the ingredient to convert between these measurements.

Use an Online Converter

Instead of calculating manually, enter the volume into our ML to Ounces Calculator to obtain an instant result.