Milliliter to US Fluid Ounce Converter
Converts milliliter to us fluid ounce (mL to fl oz) and back. The conversion factor is shown below every result.
How to Convert Milliliter to US Fluid Ounce
What Is a Milliliter?
A milliliter (mL) is an SI unit of volume equal to one thousandth of a liter, and exactly 1 cubic centimeter.
What Is an US Fluid Ounce?
The US fluid ounce (fl oz) is a US customary unit of volume defined as exactly 1/128 of a US gallon.
Common Milliliter to US Fluid Ounce Reference Points
Real-world reference values for quick sanity checks.
| Item | Milliliter (mL) | US Fluid Ounce (approx.) |
|---|---|---|
| 1 US teaspoon | 4.93 mL | 0.167 fl oz |
| 1 US tablespoon | 14.79 mL | 0.5 fl oz |
| A standard soda can | 355 mL | 12 fl oz |
| A 500 mL water bottle | 500 mL | 16.91 fl oz |
| A travel-size toiletry bottle | 50 mL | 1.69 fl oz |
| A standard wine bottle | 750 mL | 25.36 fl oz |
| Reference values are illustrative approximations for common items, not measured specifications. | ||
Where This Conversion Actually Shows Up
This is one of the more common label-reading conversions, not just a classroom one. Skincare and cosmetics are usually labeled in mL if the brand is international, and in fl oz if it's US-market packaging, sometimes both on the same bottle in different type sizes. Travel-size toiletry limits (TSA's 3.4 fl oz carry-on rule, for example) are set in fl oz but most travel bottles are sold in mL, which is exactly the kind of mismatch this converter is built for.
Beverage containers follow the same pattern. A standard US soda can is designed to hold 12 fl oz, which is why it's labeled 355 mL on the metric side, not a round metric number. A standard wine bottle is 750 mL, the industry standard worldwide, which comes out to 25.36 fl oz on the US side rather than a clean number. Recipes translated from international sources often list liquid ingredients in mL, while US recipes default to fl oz, cups, or tablespoons.
US Fluid Ounces vs. UK (Imperial) Fluid Ounces
This converter uses the US fluid ounce specifically. The UK Imperial fluid ounce is a different, larger unit, about 4% bigger than the US version, because the two systems define their base gallon differently. If you're converting a UK recipe or a UK product label, using this US-based conversion will be slightly off. The US vs UK Imperial guide covers the full breakdown of where these two systems diverge.
Milliliter to US Fluid Ounce Conversion Table
| Milliliter (mL) | US Fluid Ounce (fl oz) |
|---|---|
| 5 mL | 0.16907 fl oz |
| 10 mL | 0.33814 fl oz |
| 15 mL | 0.50721 fl oz |
| 30 mL | 1.014421 fl oz |
| 50 mL | 1.690701 fl oz |
| 100 mL | 3.381402 fl oz |
| 250 mL | 8.453506 fl oz |
| 355 mL | 12.003978 fl oz |
| 500 mL | 16.907011 fl oz |
| 750 mL | 25.360517 fl oz |
| 1000 mL | 33.814023 fl oz |
| Source: NIST SP 811, Appendix B (1 US fl oz = 29.5735295625 mL exactly) | |
Frequently Asked Questions
How do I convert milliliters to fluid ounces?
Multiply the milliliter value by 0.033814. For example, 250 mL × 0.033814 = 8.4535 fl oz.
Is this the US fluid ounce or the UK imperial fluid ounce?
This page uses the US fluid ounce (29.5735295625 mL). The UK imperial fluid ounce is a different unit, about 28.4131 mL, roughly 4% smaller. If you're working from a UK recipe, the imperial version will give a different result.
How many milliliters are in a standard shot?
A standard US shot is commonly poured at 1.5 fl oz, which equals about 44.36 mL using this conversion. Shot sizes vary by establishment and aren't a fixed legal standard.
Related Volume Converters
A good measuring tool marked in both mL and fl oz removes the guesswork at the point of use.