Fluid Ounces to Milliliters Converter
Convert fluid ounces (fl oz) to milliliters (mL) and vice versa instantly. Perfect for cooking, medicine dosage, science experiments, and everyday volume conversions. Enter a value in either unit to get the equivalent volume.
What Is a Fluid Ounce?
A fluid ounce (fl oz) is a unit of volume used in the imperial and US customary systems. It is important to note that there are two different types of fluid ounces:
- US Fluid Ounce: Equal to exactly 29.5735295625 mL. It is used in the United States for measuring liquids[reference:0].
- Imperial Fluid Ounce (UK): Equal to exactly 28.4130625 mL[reference:1]. It is used in the United Kingdom and other Commonwealth countries.
A milliliter (mL) is a metric unit of volume equal to one-thousandth of a liter. It is commonly used in medicine, cooking, and science.
How Does the Fluid Ounces to Milliliters Converter Work?
The converter uses the exact conversion factors:
1 US fl oz = 29.5735295625 mL
1 UK fl oz = 28.4130625 mL
To convert fluid ounces to milliliters: mL = fl oz × 29.5735 (US)
To convert milliliters to fluid ounces: fl oz = mL ÷ 29.5735 (US)
Simply select your fluid ounce type (US or UK), enter a value in either fluid ounces or milliliters, and the calculator will instantly compute the equivalent volume.
Why Use This Fluid Ounces to Milliliters Converter?
- Two-Way Conversion: Convert from fl oz to mL and from mL to fl oz.
- US & UK Support: Choose between US fluid ounces and UK/Imperial fluid ounces.
- Precise Results: Uses the exact conversion factors (29.5735295625 for US, 28.4130625 for UK).
- Scientific Notation: Display large or small numbers in scientific format.
- Free & Private: No registration, no data storage.
Common Volume Equivalents
- 1 US fl oz = 29.5735 mL ≈ 0.0296 L
- 1 UK fl oz = 28.4131 mL ≈ 0.0284 L
- 1 cup = 8 fl oz = 236.588 mL (US)
- 1 pint = 16 fl oz = 473.176 mL (US)
- 1 quart = 32 fl oz = 946.353 mL (US)
- 1 gallon = 128 fl oz = 3,785.41 mL (US)
❓ Fluid Ounces to Milliliters Converter FAQ
How many milliliters are in a fluid ounce?
1 US fluid ounce = 29.5735295625 mL. 1 UK/Imperial fluid ounce = 28.4130625 mL[reference:2][reference:3].
How many fluid ounces are in a milliliter?
1 mL = 0.033814 US fluid ounces. 1 mL = 0.035195 UK fluid ounces.
What is the formula for converting fluid ounces to milliliters?
mL = fl oz × 29.5735 (for US fluid ounces). For example, 8 fl oz × 29.5735 = 236.588 mL.
What is the formula for converting milliliters to fluid ounces?
fl oz = mL ÷ 29.5735 (for US fluid ounces). For example, 236.588 mL ÷ 29.5735 = 8 fl oz.
What is the difference between US and UK fluid ounces?
A US fluid ounce is 29.5735 mL, while a UK (Imperial) fluid ounce is 28.4131 mL. The US fluid ounce is about 4.08% larger than the UK fluid ounce[reference:4][reference:5].
How many milliliters are in a cup?
1 US cup = 8 fluid ounces = 236.588 mL. In the UK, 1 cup is often 250 mL (metric cup).
How do I convert fluid ounces to milliliters for cooking?
Multiply the number of fluid ounces by 29.5735 (US) or 28.4131 (UK). For quick estimates, use 30 mL per fl oz (US) or 28 mL per fl oz (UK).
How do I convert milliliters to fluid ounces for medicine?
Divide the number of milliliters by 29.5735 (US) or 28.4131 (UK). For quick estimates, use 1 fl oz ≈ 30 mL (US) or 28 mL (UK).
What is the symbol for fluid ounces?
The symbol for fluid ounces is fl oz.
What is the symbol for milliliters?
The symbol for milliliters is mL (or ml).
How do I convert fluid ounces to milliliters in my head?
Multiply the number of fluid ounces by 30 (for US) or 28 (for UK). For example, 4 fl oz × 30 = 120 mL (approximate). For precise results, use this calculator.
Is a fluid ounce the same as an ounce of weight?
No. A fluid ounce is a unit of volume, while an ounce (oz) is a unit of weight. They are not interchangeable. Fluid ounces measure liquid volume; ounces measure mass.
How many fluid ounces are in a liter?
1 liter = 33.814 US fluid ounces = 35.195 UK fluid ounces.
Can I use this calculator for medication dosing?
Yes. This calculator is useful for converting medication dosages between fluid ounces and milliliters. Always follow your healthcare provider's instructions and use a calibrated measuring device.
What is the difference between a fluid ounce and a shot glass?
A standard US shot is 1.5 fluid ounces (44.36 mL). A UK shot is typically 25 mL or 35 mL. The fluid ounce is a unit of measurement; a shot glass is a drinking vessel.
How many milliliters are in a 12 fl oz can?
A 12 fl oz can contains 12 × 29.5735 = 354.882 mL (approximately 355 mL).
How many milliliters are in a 16.9 fl oz bottle?
A 16.9 fl oz bottle (common water bottle size) contains 16.9 × 29.5735 = 499.79 mL (approximately 500 mL).