oz to ml Converter
Convert US fluid ounces to milliliters, liters and cups.
How to use this oz to ml
- 1Enter your volume in US fluid ounces.
- 2The converter shows milliliters, liters, and cups instantly.
- 3For cocktail recipes, convert fl oz measures to ml for European or metric bar equipment.
- 4For food labels, US products show net content in fl oz — the ml output gives the metric equivalent.
- 5Common reference: 1 fl oz = 29.57 ml, 8 fl oz = 1 cup = 236.6 ml, 16 fl oz = 1 pint = 473 ml.
- 6Note: this uses US fluid ounces; UK fl oz = 28.41 ml (4% smaller).
How it's calculated
ml = fl oz × 29.5735. 1 US fl oz = 29.5735 ml.
About the oz to ml
Fluid ounces to milliliters is the essential conversion for bartenders, home mixologists, recipe adapters, and anyone comparing beverage volumes between US and international standards. The US fluid ounce (29.5735 ml) is the standard for this calculator, and the conversion allows direct translation of any fl oz measurement to the milliliter quantities used by metric measuring equipment worldwide.
Cocktail and drink recipes represent one of the highest-frequency use cases. Classic cocktail recipes from US sources (Jerry Thomas, Dale DeGroff, David Wondrich) express everything in fl oz: 2 oz base spirit, 0.75 oz modifier, 0.5 oz citrus. When made with European bar equipment measured in ml (25 ml/50 ml jiggers, 5 ml bar spoons), the conversion is essential. The 25 ml metric jigger corresponds closely to the "pony" (1 fl oz = 29.57 ml), and the 50 ml metric jigger roughly corresponds to a standard double shot (1.5 fl oz = 44.36 ml). Slight adjustments to recipes when converting to metric jigger sizes are normal.
US food packaging uses fl oz for net volume labeling: soda cans (12 fl oz = 354.9 ml), water bottles (16.9 fl oz = 500 ml), orange juice cartons (64 fl oz = 1.89 L). When importing or comparing products from international markets, converting fl oz to ml shows whether the volumes are equivalent. A US 16.9 fl oz water bottle is essentially identical to the international 500 ml bottle (16.91 fl oz vs 16.9 fl oz — the international bottle rounds down slightly).
The distinction between US and UK fluid ounces creates practical confusion in imported recipes and products. The UK uses the imperial fluid ounce (28.4131 ml) while the US uses 29.5735 ml — a 4.1% difference. This means a UK recipe calling for 8 fl oz of milk contains 227 ml (using UK fl oz), while the same measurement in a US recipe contains 237 ml. For cooking this rarely matters, but for pharmaceutical and medical dosing, always confirm which fluid ounce standard applies.
Volume labeling standards differ globally. The US requires both US customary (fl oz) and metric (ml) on consumer products. The EU requires ml. Japan requires ml. Canada requires both metric and imperial in either order. For importers and exporters of liquid products, understanding fl oz–ml conversion is a regulatory compliance requirement, not just a convenience.
Frequently asked questions
How many ml is a standard US shot (1.5 fl oz)?
1.5 fl oz × 29.5735 = 44.36 ml — the standard US shot size. A double shot is 3 fl oz = 88.7 ml. In the UK, a single measure is typically 25 ml or 35 ml, both smaller than the US 44 ml shot.
How many ml is 16 fl oz?
16 fl oz × 29.5735 = 473.18 ml — a standard US pint. Note: a UK pint is 20 fl oz (imperial) = 568 ml, significantly larger than the US pint.
How many ml is a 32 fl oz water bottle?
32 fl oz × 29.5735 = 946 ml, approximately 1 liter (close to 1 quart). Many large US water bottles are 32 fl oz (946 ml) or 40 fl oz (1,183 ml).
How many fl oz is a standard wine bottle?
A standard 750 ml wine bottle = 750 ÷ 29.5735 = 25.36 fl oz. Poured into standard 5 fl oz (148 ml) wine glasses, a bottle yields approximately 5 glasses.
How do I convert fl oz to ml in a cocktail recipe?
Multiply each ingredient's fl oz measurement by 29.57 to get ml. Example: 2 fl oz gin × 29.57 = 59.14 ml; 0.75 fl oz vermouth × 29.57 = 22.18 ml; 0.25 fl oz Cointreau × 29.57 = 7.39 ml. For a metric jigger (25 ml or 50 ml), you may need to slightly adjust proportions while keeping ratios intact.