Cups to Ounces for Milk — 1 US cup = 8.4658 ounce

In short One us cup of milk is 8.4657508679 ounce. Going the other way, one ounce is 0.118123013 us cup. That works out at 2 us cup = 16.9315017358 ounce and 4 = 33.8630034716. The figure comes from milk weighing 240 g per US cup — a generic cups-to-grams converter assumes water and will give you the wrong answer here, because volume to weight depends entirely on what is in the cup.

How to use the Cups to Ounces — Milk

Type the value you want to convert.
Pick the unit you are converting from and the unit you want.
The converted value and the exact conversion factor are shown instantly.

About the Cups to Ounces — Milk

Whole milk is very slightly denser than water because of its dissolved sugars and proteins, though the difference is small enough that most recipes treat a cup of milk as 240 ml and move on. Skimmed milk is marginally denser than whole, since fat is the lightest component. Buttermilk and single cream are close enough to substitute by weight in most batters. The figure this page works from is 240 g per US cup, the spooned-and-levelled weight recorded by King Arthur Baking and the USDA food database. Converting us cup to ounce for milk, the amounts that come up most often are: 1/4 us cup = 2.12 ounce; 1/3 us cup = 2.82 ounce; 1/2 us cup = 4.23 ounce; 2/3 us cup = 5.64 ounce; 3/4 us cup = 6.35 ounce; 1 us cup = 8.47 ounce; 1 1/2 us cup = 12.7 ounce; 2 us cup = 16.9 ounce; 3 us cup = 25.4 ounce.

What people use it for

Following a US recipe with a kitchen scale instead of cup measures.
Scaling a recipe up or down without compounding measuring error.
Converting a European recipe written in grams into cups.

Details

1 US cup of milk	240 g
1 US cup	8.4657508679 Ounce
1 Ounce	0.118123013 US cup
Worth knowing	Buttermilk and single cream are close enough to substitute by weight in most batters.

The maths behind it

This tool uses ounce = us cup × 8.4657508679, derived from milk weighing 240 g per US cup. Every intermediate value is shown on screen, so the result can be checked by hand.

Whole milk is very slightly denser than water because of its dissolved sugars and proteins, though the difference is small enough that most recipes treat a cup of milk as 240 ml and move on. Skimmed milk is marginally denser than whole, since fat is the lightest component.

Where this tool stops

Volume-to-weight conversion is inherently approximate. Humidity, brand, how finely something is milled and how long it has sat in the cupboard all shift the figure by a few per cent.

Frequently asked questions

Is a cup of milk 240 g or 240 ml?

Both, near enough. Milk is about 1.03 g per ml, so a 240 ml cup weighs roughly 245 g. For baking the difference is irrelevant; for a precise custard or a large batch it starts to show.

Why does a cup of milk not weigh the same as a cup of water?

Because a cup measures volume and a scale measures weight, and the two only agree for water. Milk has its own density — 240 g per US cup — so any generic volume converter gives the wrong answer here.

How much does the way I fill the cup matter?

Not at all, and this is one of the ingredients where cup measuring is genuinely reliable. Milk is a liquid: it cannot be packed or scooped loosely, so a cup is 240 g whoever pours it. Read the jug at eye level and the measurement is as good as a scale would give you.

Is a US cup the same as a UK or metric cup?

No. A US cup is 236.6 ml, a metric cup is 250 ml and an old UK cup is 284 ml. These pages use the US cup, because that is what US recipes mean.

Are there any usage caps on the Cups to Ounces — Milk?

There is no cost and no cap. The Cups to Ounces — Milk is not a demo of a paid product, so nothing is held back or watermarked.

Does anything I enter leave my computer?

No. The Cups to Ounces — Milk runs entirely in your browser using JavaScript. Because the work happens locally, the tool also keeps working if your connection drops, and closing the tab is all it takes to discard everything.

What formula does the Cups to Ounces — Milk use?

It uses ounce = us cup × 8.4657508679, derived from milk weighing 240 g per US cup. The full working is printed under the result, so you can follow every step rather than trusting a black box.

Give me a worked example.

Enter 2 us cup of milk and the Cups to Ounces — Milk returns 16.9315017358 ounce.

What is the Cups to Ounces — Milk used for?

Typical uses: following a US recipe with a kitchen scale instead of cup measures. Scaling a recipe up or down without compounding measuring error. Converting a European recipe written in grams into cups. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.

When is the Cups to Ounces — Milk not the right tool?

Volume-to-weight conversion is inherently approximate. Humidity, brand, how finely something is milled and how long it has sat in the cupboard all shift the figure by a few per cent. Knowing where a tool stops being trustworthy matters more than the cases where it works.

Which values should I know?

1 US cup of milk is 240 g. 1 US cup is 8.4657508679 Ounce. 1 Ounce is 0.118123013 US cup. These are printed on the page itself, so you do not have to take them on trust.

Can I rely on this for exact work?

The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.

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Cups to Ounces — Milk

How to use the Cups to Ounces — Milk

About the Cups to Ounces — Milk

What people use it for

Details

The maths behind it

Where this tool stops

Frequently asked questions

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