mL to oz Converter
Convert milliliters to fluid ounces instantly. Choose between US fluid ounces or UK (Imperial) fluid ounces, and see the equivalent in cups, tablespoons, and liters.
Common Quick Presets
Enter an amount to see the conversion…
| Milliliters (mL) | US fl oz | UK fl oz | US Cups | US Tbsp | Common Item |
|---|---|---|---|---|---|
| 1 mL | 0.034 | 0.035 | 0.004 | 0.067 | 1/5 teaspoon |
| 5 mL | 0.169 | 0.176 | 0.021 | 0.338 | 1 teaspoon |
| 15 mL | 0.507 | 0.528 | 0.063 | 1.014 | 1 tablespoon |
| 30 mL | 1.014 | 1.056 | 0.127 | 2.029 | 1 shot |
| 59 mL | 2.000 | 2.078 | 0.250 | 4.000 | Quarter cup |
| 118 mL | 4.000 | 4.156 | 0.500 | 8.000 | Half cup |
| 177 mL | 5.991 | 6.234 | 0.750 | 11.983 | 3/4 cup |
| 237 mL | 8.000 | 8.327 | 1.000 | 16.000 | 1 US cup |
| 355 mL | 12.000 | 12.492 | 1.500 | 24.000 | Soda can |
| 473 mL | 16.000 | 16.653 | 2.000 | 32.000 | 1 US pint |
| 500 mL | 16.907 | 17.598 | 2.113 | 33.814 | Water bottle |
| 750 mL | 25.361 | 26.396 | 3.170 | 50.721 | Wine bottle |
| 1000 mL | 33.814 | 35.195 | 4.227 | 67.628 | 1 liter |
| 1500 mL | 50.721 | 52.793 | 6.340 | 101.442 | 1.5 liters |
| 2000 mL | 67.628 | 70.390 | 8.454 | 135.256 | 2 liters |
| 3549 mL | 120.000 | 124.897 | 15.000 | 240.000 | 1 US gallon |
US fluid ounce vs UK fluid ounce
A US fluid ounce is defined as exactly 29.5735 milliliters. A UK (Imperial) fluid ounce is slightly smaller at 28.4131 milliliters. The difference is about 4%, which may seem small, but it adds up in recipes or medical dosing. If a recipe originates from the US, use US fluid ounces. If it is from the UK, Australia, Canada, or New Zealand, it likely uses Imperial fluid ounces.
Fluid ounces are not weight ounces
A fluid ounce (fl oz) measures volume, while a regular ounce (oz) measures weight. For water, one fluid ounce weighs almost exactly one ounce, which is why people often confuse the two. But for denser liquids like honey, syrup, or oil, one fluid ounce weighs significantly more than one ounce by weight. This converter deals strictly with volume (milliliters to fluid ounces).
Quick mental math for cooking
If you do not have a converter handy, there are a few rules of thumb that work well enough for cooking. To convert mL to US fl oz, divide by 30 (since 30 mL is very close to 1 fl oz). For example, 150 mL / 30 = 5 fl oz (actual: 5.07 fl oz). To convert fl oz to mL, multiply by 30. This is accurate enough for most recipes but not for medication dosing.
Using measuring cups for mL
Most standard US measuring cups have metric markings on the inside or opposite side. If you only have a cup measure without mL markings, remember that 1 US cup is exactly 236.588 mL (often rounded to 240 mL on packaging). 1/2 cup is roughly 120 mL, 1/4 cup is roughly 60 mL, and 1 tablespoon is roughly 15 mL. These approximations are built into the quick preset buttons above.
Medical and laboratory precision
In medical settings, milliliters are the standard unit and fluid ounces are rarely used because of the confusion between US and UK measures. If you are converting medication doses, always use the exact conversion factor (29.5735 mL per US fl oz) and never round to “about 30 mL.” Syringes and dosing cups are marked in milliliters for this reason.
What is a mL to oz Converter?
A mL to oz converter is a volume conversion tool that changes a measurement in milliliters (mL) into fluid ounces (fl oz). Because there are two different fluid ounce standards in the world — the US fluid ounce and the UK Imperial fluid ounce — this calculator lets you choose which one you need. It also shows the equivalent measurement in cups, tablespoons, and liters so you have all the common kitchen and lab units in one place.
Why milliliters and ounces are both common
Milliliters are part of the metric system and are used by most of the world for measuring liquids, including in science, medicine, and cooking. Fluid ounces are primarily used in the United States and in a few other countries that still use Imperial measurements. This creates a frequent need for conversion, especially when following recipes from different countries, reading nutrition labels on imported products, or comparing product sizes while shopping.
How the conversion works
The conversion is a simple multiplication or division using a fixed ratio. To convert milliliters to US fluid ounces, divide the mL value by 29.5735. To convert milliliters to UK fluid ounces, divide the mL value by 28.4131. The calculator performs this calculation and then uses the result to derive related measurements: dividing ounces by 8 gives cups, multiplying by 2 gives tablespoons, and dividing by 1000 gives liters.
Common items and their volumes
Understanding real-world volumes makes conversions more intuitive. A standard soda can holds 355 mL (12 fl oz). A standard wine bottle holds 750 mL (25.4 fl oz). A typical water bottle is 500 mL (16.9 fl oz). A US gallon contains 3785 mL (128 fl oz). A cup of coffee is usually about 240 mL (8 fl oz). Knowing these reference points helps you quickly estimate conversions without a calculator.
Who this converter is for
This tool is for home cooks adapting international recipes, travelers comparing product sizes, students working on chemistry or physics problems, and anyone who encounters both metric and Imperial volume measurements in daily life. The quick preset buttons provide one-tap access to the most commonly needed conversions, and the chart serves as a permanent reference for standard amounts.