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Free fluid ounces to ml converter with instant bidirectional conversion. Enter fluid ounces to get milliliters, or enter milliliters to get fluid ounces. Includes liters and cups output for additional context.
Last updated: April 16, 2026
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Volume Formulas
ml = fl oz x 29.5735295625 and fl oz = ml x 0.0338140227
Fluid Ounces to Milliliters
1 fl oz = 29.57353 ml
Formula: 1 x 29.5735295625 = 29.573530 ml
Liters
0.029574 L
US Cups
0.125 cups
Quick reference
Formula
fl oz x 29.5735295625
Uses exact conversion factor for accurate milliliter output.
Formula
ml x 0.0338140227
Reverse conversion with exact fluid ounce output.
Outputs
L and cups
Useful for recipes, beverages, and liquid packaging.
For 12 fl oz, the equivalent volume is 354.8824 ml.
Input
12 fl oz
Output
354.8824 ml
This fluid ounces to ml converter uses recognized conversion constants between US fluid ounces and metric milliliters. The calculator detects the active input field and applies the corresponding formula in real time.
ml = fl oz x 29.5735295625fl oz = ml x 0.0338140227cups = fl oz / 8These constants are standard for U.S. culinary measurements, nutrition labels, and beverage serving sizes.
Result: 20 fl oz equals 591.4706 ml
This is also 0.5915 liters or 2.5 US cups.
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