Ounces to Milliliters
### Liquid Volumetric Metrology & NIST SP 811 Standards A **fluid ounce (fl oz)** is a measure of liquid volume, not mass. There are two primary international systems: - **US Customary Fluid.
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📐 Formula
💡 Practical Example
A standard 12 fl oz American soda can holds exactly 354.9 mL (or 0.355 liters) of liquid.
📖 About Ounces to Milliliters
Liquid Volumetric Metrology & NIST SP 811 Standards
A fluid ounce (fl oz) is a measure of liquid volume, not mass. There are two primary international systems:
- US Customary Fluid Ounce: (1) / (128) US gal = 29.573530 mL = (1) / (8) US cup = 2 US Tbsp = 6 US tsp
- UK Imperial Fluid Ounce: (1) / (160) UK gal = 28.413063 mL
- US FDA Nutrition Labeling: 30.000000 mL (rounded for food labels)
Primary Beverage Bottle Volume Equivalents
- 1.5 fl oz (Jigger Shot): = 44.36 mL = 3.0 Tbsp
- 8.0 fl oz (1 Cup Coffee): = 236.59 mL = 1.00 cup
- 12.0 fl oz (Soda Can): = 354.88 mL = 1.50 cups
- 16.0 fl oz (US Pint): = 473.18 mL = 2.00 cups
- 16.91 fl oz (Water Bottle): 500.00 mL = 0.500 L
- 20.0 fl oz (UK Imperial Pint): = 568.26 mL = 2.40 cups
- 25.36 fl oz (Wine Bottle): 750.00 mL = 0.750 L
Equations
- Milliliters (mL) = US Fluid Ounces (fl oz) × 29.57353
- US Fluid Ounces (fl oz) = Milliliters (mL)29.57353
How to Use This Calculator
Enter your Volume Value to Convert (e.g. 12.0), Fluid Ounce Standard — choose from US Customary Fluid Ounce (29.574 mL / US Standard), UK Imperial Fluid Ounce (28.413 mL / British Pint), US Nutrition / FDA Labeling Ounce (30.000 mL), Beverage & Mixology Benchmark — choose from Custom Volume Value, 1.5 fl oz (44.4 mL / Cocktail Jigger Shot), 8.0 fl oz (236.6 mL / 1-Cup Coffee Mug), and Conversion Direction — choose from Fluid Ounces to Milliliters (fl oz → mL / multiply by 29.574), Milliliters to Fluid Ounces (mL → fl oz / divide by 29.574). Results update instantly as you type — adjust any value to compare scenarios.
The Formula
Conversion factors (to SI base unit or reference unit):
ml: 29.5735295625
oz: 1.5
maximumFractionDigits: 1
Worked Example
A standard 12 fl oz American soda can holds exactly 354.9 mL (or 0.355 liters) of liquid.
Understanding Your Result
Unit conversion precision: round to the same number of significant figures as your original measurement. Converting 6 feet to meters gives 1.8288 m — but if your measurement was approximate (±1 inch), expressing more than 2 decimal places is false precision. For international trade and technical specifications, SI units (meters, kilograms, liters) are the standard. US customary units (feet, pounds, gallons) differ from Imperial UK units: 1 US gallon = 3.785 L vs. 1 UK gallon = 4.546 L.
💡 Methodological Standards & Calculation Accuracy
- All calculations are performed client-side in your browser using verified, standards-compliant mathematical algorithms.
- Results are provided for educational and informational analysis; verify critical applications with certified domain specialists.
- Ensure input values are entered in consistent units matching the selector options to guarantee accurate outputs.
- Periodic recalibration is recommended whenever baseline assumptions, operating parameters, or external conditions change.
Results are for informational and educational purposes only. Always verify critical decisions with a qualified professional.