How many milliliters are in 3 fl oz?

3 US fluid ounces equal 88.72 ml, and 3 Imperial (UK) fluid ounces equal 85.24 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 3 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. 3 US fl oz is 88.72 ml; 3 Imperial fl oz is 85.24 ml — a difference of 3.48 ml. If a recipe does not say, match it to where the recipe was written.

How many ml is 3 UK fluid ounces?

3 Imperial (UK) fluid ounces equal 85.24 ml. Imperial ounces are about 4% smaller than US ounces, so a British recipe calling for 3 fl oz gives slightly less liquid than 3 US ounces, which would be 88.72 ml.

How many cups is 3 fl oz?

3 US fluid ounces is about 0.38 US cups, since one US cup is 8 fluid ounces (88.72 ml total). It is not a round number of cups, so for baking it is usually easier to measure 3 fl oz directly, or in millilitres: 88.72 ml (US) or 85.24 ml (Imperial).

How do you convert 3 fl oz to ml?

Multiply by the size of one fluid ounce. US: 3 × 29.5735 = 88.72 ml. Imperial: 3 × 28.4131 = 85.24 ml. To go from millilitres back to fluid ounces, divide by the same factor.

Does 3 fl oz of water weigh 88.72 grams?

Roughly, yes. Water is about 1 gram per millilitre, so 3 US fluid ounces (88.72 ml) of water weighs close to 88.72 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.

3 fl oz in ml

3 fl oz in ml is 88.72 ml using US fluid ounces, or 85.24 ml using Imperial (UK) fluid ounces. Three fluid ounces sits between a quarter and a third of a US cup — a small tasting glass. This page gives you both conversions, a live fluid-ounce converter that also handles cups, tablespoons, teaspoons,…

FL OZ CONVERTER

Fluid ounces

Ounce type

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

Convert to

3 US fl oz =

88.72

Milliliter

LIVE DIAGRAM

US FLUID OUNCE

88.72

milliliters

IMPERIAL (UK)

85.24

milliliters

US vs IMPERIAL — 3 FL OZ

US88.72 ml

Imperial (UK)85.24 ml

The US ounce is larger by 3.48 ml (4.1%) at this amount.

VISUAL FILL

38% of a US cup

1 US cup = 236.59 ml

Created with❤️byeaglecalculator.com

3 FL OZ IN ML

3 FLUID OUNCES → MILLILITERS

3 US fluid ounces	88.72 ml	× 29.5735 ml
3 Imperial (UK) fluid ounces	85.24 ml	× 28.4131 ml

Three fluid ounces sits between a quarter and a third of a US cup — a small tasting glass. 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.

3 US FL OZ IN OTHER UNITS

MILLILITERS

88.72 ml

LITRES

0.0887 L

US TABLESPOONS

6 tbsp

US TEASPOONS

18 tsp

US CUPS (240 ML)

0.37 cups

HOW TO USE

1
Enter the number of fluid ounces you want to convert — this page starts with 3.
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

3 US fluid ounces come to 88.72 ml, while 3 Imperial ounces are 85.24 ml — a gap of 3.48 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.