How many milliliters are in 15 fl oz?

15 US fluid ounces equal 443.60 ml, and 15 Imperial (UK) fluid ounces equal 426.20 ml. Use the US figure for American recipes, nutrition labels and cups; use the Imperial figure in the UK, Ireland, Australia and Canada. They differ because a US fluid ounce is 29.5735 ml while an Imperial fluid ounce is 28.4131 ml.

Is 15 fl oz measured in US or Imperial ounces?

By default, 'fl oz' means US fluid ounces in the United States and Imperial fluid ounces in the UK and Commonwealth. 15 US fl oz is 443.60 ml; 15 Imperial fl oz is 426.20 ml — a difference of 17.41 ml. If a recipe does not say, match it to where the recipe was written.

How many ml is 15 UK fluid ounces?

15 Imperial (UK) fluid ounces equal 426.20 ml. Imperial ounces are about 4% smaller than US ounces, so a British recipe calling for 15 fl oz gives slightly less liquid than 15 US ounces, which would be 443.60 ml.

How many cups is 15 fl oz?

15 US fluid ounces is about 1.88 US cups, since one US cup is 8 fluid ounces (443.60 ml total). It is not a round number of cups, so for baking it is usually easier to measure 15 fl oz directly, or in millilitres: 443.60 ml (US) or 426.20 ml (Imperial).

How do you convert 15 fl oz to ml?

Multiply by the size of one fluid ounce. US: 15 × 29.5735 = 443.60 ml. Imperial: 15 × 28.4131 = 426.20 ml. To go from millilitres back to fluid ounces, divide by the same factor.

Does 15 fl oz of water weigh 443.60 grams?

Roughly, yes. Water is about 1 gram per millilitre, so 15 US fluid ounces (443.60 ml) of water weighs close to 443.60 g. This only works for water and thin water-like liquids; oil, syrup and flour all have different densities, so their weight will not match their volume in millilitres.

15 fl oz in ml

15 fl oz in ml is 443.60 ml using US fluid ounces, or 426.20 ml using Imperial (UK) fluid ounces. Fifteen fluid ounces is just under two US cups — near a 375 ml half-bottle of wine. This page gives you both conversions, a live fluid-ounce converter that also handles cups, tablespoons, teaspoons, lit…

FL OZ CONVERTER

Fluid ounces

Ounce type

1 US fl oz = 29.5735 ml · 1 Imperial fl oz = 28.4131 ml

Convert to

15 US fl oz =

443.6

Milliliter

LIVE DIAGRAM

US FLUID OUNCE

443.60

milliliters

IMPERIAL (UK)

426.20

milliliters

US vs IMPERIAL — 15 FL OZ

US443.60 ml

Imperial (UK)426.20 ml

The US ounce is larger by 17.41 ml (4.1%) at this amount.

VISUAL FILL

1 US cup +

1 US cup = 236.59 ml

Created with❤️byeaglecalculator.com

15 FL OZ IN ML

15 FLUID OUNCES → MILLILITERS

15 US fluid ounces	443.60 ml	× 29.5735 ml
15 Imperial (UK) fluid ounces	426.20 ml	× 28.4131 ml

Fifteen fluid ounces is just under two US cups — near a 375 ml half-bottle of wine. Unless a recipe or label says otherwise, US fluid ounces are the default in the United States, while UK, Irish, Australian and Canadian recipes use the slightly smaller Imperial fluid ounce.

15 US FL OZ IN OTHER UNITS

MILLILITERS

443.60 ml

LITRES

0.444 L

US TABLESPOONS

30 tbsp

US TEASPOONS

90 tsp

US CUPS (240 ML)

1.85 cups

HOW TO USE

1
Enter the number of fluid ounces you want to convert — this page starts with 15.
2
Choose whether your figure is in US or Imperial (UK) fluid ounces using the toggle.
3
Pick a target unit — millilitres, litres, cups, tablespoons, teaspoons or pints — and read the result instantly.

GOOD TO KNOW

15 US fluid ounces come to 443.60 ml, while 15 Imperial ounces are 426.20 ml — a gap of 17.41 ml at this size. Because US ounces are the larger of the two, US measurements always yield slightly more liquid than the same count of Imperial ounces.

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Last updated: July 28, 2026 · Conversion factors: 1 US fl oz = 29.5735295625 ml, 1 Imperial fl oz = 28.4130625 ml · Verified by the EagleCalculator team · Eagle-eyed accuracy for every calculation.

15 fl oz in ml

FL OZ CONVERTER

LIVE DIAGRAM

15 FL OZ IN ML

15 US FL OZ IN OTHER UNITS

HOW TO USE

GOOD TO KNOW

FREQUENTLY ASKED QUESTIONS

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