ML to Ounces Converter: Milliliters to Fluid Ounces

How to use the milliliters to ounces converter

1. Enter a volume in the Milliliters field or the US Fluid Ounces field.
2. The other field updates automatically as you type.
3. Read the converted value along with equivalent measurements in cups, tablespoons, and liters below.

How the ml to ounces conversion works

The United States defines one fluid ounce as exactly 29.5735295625 milliliters. To convert milliliters to fluid ounces, divide the volume in mL by that constant:

fl oz = mL / 29.5735295625

To go the other direction, multiply fluid ounces by the same number:

mL = fl oz * 29.5735295625

For example, a 500 mL water bottle holds 500 / 29.5735295625 = 16.907 fl oz. A standard 12 fl oz soda can holds 12 * 29.5735295625 = 354.882 mL.

Common milliliter and fluid ounce equivalents

This table lists everyday volumes converted between milliliters and US fluid ounces. Values are rounded to three decimal places for readability.

US fluid ounces versus UK imperial fluid ounces

A frequent source of errors is mixing up US and UK fluid ounces. The US fluid ounce is defined as 1/128 of a US gallon, which equals exactly 29.5735295625 mL. The UK imperial fluid ounce is 1/160 of an imperial gallon, equaling exactly 28.4130625 mL. That makes the US fluid ounce about 4 percent larger than the imperial one.

This ml to ounces converter uses the US definition exclusively. If you are working with British recipes or labels, the numbers will differ slightly. For instance, 100 mL is 3.381 US fl oz but 3.520 imperial fl oz. Always check which system a recipe or product label uses before converting.

Fluid ounces versus weight ounces

Fluid ounces measure volume, while avoirdupois ounces measure mass. They are not interchangeable unless the liquid has a density of exactly 1 gram per milliliter, like pure water at 4 degrees Celsius. For water, 1 US fluid ounce weighs approximately 1.043 avoirdupois ounces. For denser liquids like honey or syrup, the weight per fluid ounce is significantly higher.

When a recipe calls for "ounces" of a liquid, it almost always means fluid ounces. When it specifies dry ingredients by the ounce, it means weight. If you need to convert between volume and mass, you must know the substance's density. One milliliter is always equal to one cubic centimeter, as explained on the ml to cc page, regardless of what the liquid is.

Practical uses for converting ml to ounces

Cooking and baking often require switching between metric and US customary units. European recipes list liquids in milliliters, while American ones use cups and fluid ounces. Since one US cup equals eight fluid ounces, you can chain conversions: first convert mL to fl oz, then divide by eight to get cups. For quick cup lookups, the cups to ounces tool handles that step directly.

Bartending is another common use case. Standard jiggers are marked in both mL and fl oz. A typical pour of 45 mL is about 1.52 fl oz. Pharmacists and nurses also convert between these units when preparing liquid medications, where precision matters more than in the kitchen.

Worked examples

Each result below was produced by the same code the tool runs, so you can check your own numbers against them.