How many milliliters are in 1 fl oz?

1 US fluid ounce equals 29.57 ml, and 1 Imperial (UK) fluid ounce equals 28.41 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 1 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. 1 US fl oz is 29.57 ml; 1 Imperial fl oz is 28.41 ml — a difference of 1.16 ml. If a recipe does not say, match it to where the recipe was written.

How many ml is 1 UK fluid ounce?

1 Imperial (UK) fluid ounce equals 28.41 ml. Imperial ounces are about 4% smaller than US ounces, so a British recipe calling for 1 fl oz gives slightly less liquid than 1 US ounce, which would be 29.57 ml.

How many cups is 1 fl oz?

1 US fluid ounce is about 0.12 US cups, since one US cup is 8 fluid ounces (29.57 ml total). It is not a round number of cups, so for baking it is usually easier to measure 1 fl oz directly, or in millilitres: 29.57 ml (US) or 28.41 ml (Imperial).

How do you convert 1 fl oz to ml?

Multiply by the size of one fluid ounce. US: 1 × 29.5735 = 29.57 ml. Imperial: 1 × 28.4131 = 28.41 ml. To go from millilitres back to fluid ounces, divide by the same factor.

How many ml is a shot?

A US 'shot' is usually 1.5 fluid ounces (44.36 ml), but a single ounce pour — sometimes called a pony shot — is 1 US fl oz, which is 29.57 ml. In the UK a standard spirit measure is 25 ml or 35 ml, set by law rather than in ounces.

1 fl oz in ml

1 fl oz in ml is 29.57 ml using US fluid ounces, or 28.41 ml using Imperial (UK) fluid ounces. One fluid ounce is a small pour — think a single espresso shot or a splash of vanilla extract. This page gives you both conversions, a live fluid-ounce converter that also handles cups, tablespoons, teaspo…

FL OZ CONVERTER

Fluid ounces

Ounce type

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

Convert to

1 US fl oz =

29.57

Milliliter

LIVE DIAGRAM

US FLUID OUNCE

29.57

milliliters

IMPERIAL (UK)

28.41

milliliters

US vs IMPERIAL — 1 FL OZ

US29.57 ml

Imperial (UK)28.41 ml

The US ounce is larger by 1.16 ml (4.1%) at this amount.

VISUAL FILL

13% of a US cup

1 US cup = 236.59 ml

Created with❤️byeaglecalculator.com

1 FL OZ IN ML

1 FLUID OUNCE → MILLILITERS

1 US fluid ounce	29.57 ml	× 29.5735 ml
1 Imperial (UK) fluid ounce	28.41 ml	× 28.4131 ml

One fluid ounce is a small pour — think a single espresso shot or a splash of vanilla extract. 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.

1 US FL OZ IN OTHER UNITS

MILLILITERS

29.57 ml

LITRES

0.0296 L

US TABLESPOONS

2 tbsp

US TEASPOONS

6 tsp

US CUPS (240 ML)

0.123 cups

HOW TO USE

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

The word 'ounce' comes from the Latin uncia, a twelfth. A fluid ounce was once the volume of one ounce of water, which is why the US (29.5735 ml) and Imperial (28.4131 ml) versions parted ways when each country fixed its gallon differently.

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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.

1 fl oz in ml

FL OZ CONVERTER

LIVE DIAGRAM

1 FL OZ IN ML

1 US FL OZ IN OTHER UNITS

HOW TO USE

GOOD TO KNOW

FREQUENTLY ASKED QUESTIONS

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