Milliliters to Fluid Ounces Converter
Unit ConversionConvert milliliters to fluid ounces: 1 milliliter is about 0.033814 fluid ounces. With a conversion table, the formula and every related volume converter.
Fluid Ounces
Equivalent volume in the selected fluid ounce standard
Found this calculator useful?
From Scratch To $10K/Month In 60 Days
This is a proven money making system that takes students by the hand to make at least $10,000 per month, every month. Students get 12 weeks of guided coaching in addition to the "MPS Super Funnel" and tools.
We value your privacy and promise not to sell or misuse your information. Here's our privacy policy.
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Unit Conversion calculators
Sponsored
SponsoredConverting milliliters to fluid ounces is simple once you know the right factor, but the exact number actually depends on which fluid ounce you mean. A US fluid ounce equals exactly 29.5735295625 milliliters, while a UK (Imperial) fluid ounce is smaller, at exactly 28.4130625 milliliters. A converter that only handles the US version gives a slightly wrong answer for anyone working with UK recipes, medication dosing, or British packaging.
This calculator lets you pick either standard before converting, so the result matches whichever fluid ounce your recipe, label, or region actually uses. Enter any amount in milliliters, choose US or UK fluid ounces, and the equivalent updates instantly. The difference is small per ounce, about 4 percent, but it adds up on larger volumes: 500 mL comes out to 16.91 US fluid ounces or 17.60 UK fluid ounces, a gap of over half an ounce.
Below you will find the exact formulas for both standards, a table of common milliliter amounts already converted, and a full explanation of why the US and UK fluid ounce differ in the first place.
How to Convert Milliliters to Fluid Ounces
To convert milliliters to US fluid ounces, divide the milliliter amount by 29.5735295625. To convert to UK (Imperial) fluid ounces instead, divide by 28.4130625. Both factors are exact, defined constants, not rounded approximations.
| Standard | 1 Fluid Ounce Equals | Formula |
|---|---|---|
| US fluid ounce | 29.5735295625 mL | fl oz = mL / 29.5735295625 |
| UK (Imperial) fluid ounce | 28.4130625 mL | fl oz = mL / 28.4130625 |
For a quick mental estimate without a calculator, US fluid ounces are close enough to divide by 30, and UK fluid ounces are close enough to divide by 28. For anything you need to be precise about, such as medication dosing or a recipe that has to come out right, use the exact calculator above rather than the rough estimate.
Common Milliliter to Fluid Ounce Conversions
These are the milliliter amounts people look up most often, converted to both US and UK fluid ounces so you can find yours without typing it in.
| Milliliters | US Fluid Ounces | UK Fluid Ounces |
|---|---|---|
| 30 mL | 1.01 fl oz | 1.06 fl oz |
| 50 mL | 1.69 fl oz | 1.76 fl oz |
| 100 mL | 3.38 fl oz | 3.52 fl oz |
| 150 mL | 5.07 fl oz | 5.28 fl oz |
| 200 mL | 6.76 fl oz | 7.04 fl oz |
| 250 mL | 8.45 fl oz | 8.80 fl oz |
| 500 mL | 16.91 fl oz | 17.60 fl oz |
| 1,000 mL | 33.81 fl oz | 35.20 fl oz |
US vs UK Fluid Ounces: What Is the Difference
The US and UK fluid ounce come from two different historical gallon definitions. The US gallon is based on an old English wine gallon of 231 cubic inches, split into 128 fluid ounces. The UK Imperial gallon, legally defined in 1985 as exactly 4.54609 liters, is split into 160 fluid ounces instead. That is why the UK fluid ounce is the smaller of the two: the imperial gallon is about 20% bigger, but it is split into 160 ounces instead of 128.
- US fluid ounce: 29.5735295625 mL, used throughout the United States
- UK fluid ounce: 28.4130625 mL, used in the United Kingdom and defined from the Imperial gallon
- The UK fluid ounce is about 4 percent smaller than the US fluid ounce
- Nutrition labels, drug dosing, and recipes can all differ depending on which standard was used to write them
If you are working from a British recipe, a UK-labeled medication, or Imperial packaging, use the UK setting above. If you are working from an American source, US is almost always the right choice, and it is this calculator's default.
Because 1 cubic centimeter is exactly 1 milliliter, the Cubic Centimeters to Milliliters Converter is the quick check when a label uses cc instead of mL. A fluid ounce measures volume and a pound measures weight, so the Fluid Ounces to Pounds Converter uses the ingredient's density to connect the two. When an ingredient is weighed rather than measured, the Grams to Milliliters Converter turns grams into milliliters for the ingredient you pick.
Frequently Asked Questions
How many fluid ounces is 5 milliliters?
About 0.16907 fluid ounces.
How many fluid ounces is 15 milliliters?
About 0.50721 fluid ounces.
How many fluid ounces is 75 milliliters?
About 2.5361 fluid ounces.
How many fluid ounces is 330 milliliters?
About 11.1586 fluid ounces.
What is the difference between US and UK fluid ounces?
A UK fluid ounce is about 4 percent smaller than a US fluid ounce, 28.4130625 mL versus 29.5735295625 mL. The difference comes from the US and UK defining their gallons differently, then splitting each gallon into a different number of fluid ounces.
How many fluid ounces are in a cup?
A US cup is 8 US fluid ounces. If you need milliliters instead, the Milliliters to Cups Converter handles that conversion directly.
Spot a mistake? Tell us what's wrong.
Request a calculator. The most-requested ones get built first in our monthly batch.
Request a calculatorWant this calculator on your website?
Embed the Milliliters to Fluid Ounces Converter on any site — no code needed. Customize colors, remove branding, and track usage.
SponsoredSponsored