One ounce of whole milk is 0.11618657 cups, so converting ounces of whole milk to cups means multiplying by 0.11618657. That factor is specific to this ingredient — it comes from its density, not from any relationship between the two units.
The density behind that figure is 1.0313 g per mL, against 1.00 for water. A cup of water weighs 236.6 g and a cup of whole milk weighs 244 g, so this ingredient is 103.1% as heavy as the same volume of water — the single fact the whole page rests on.
A cup of whole milk is 244 g when it is measured the standard way, but how it gets into the cup changes the answer: between about 242.8 g and 246.4 g covers the range from lightly spooned to firmly packed. That 1% spread is larger than most of the adjustments recipes fuss over, and it disappears entirely the moment the ingredient is weighed instead.
One cup of whole milk is 8.607 oz. US kitchen scales usually step in eighths of an ounce, which is 3.54 g — around 1.45% of a cup of this ingredient, so the scale is precise enough for a full cup and coarse for a spoonful. That is why recipes mix the two systems: ounces for the bulk, spoons for the small amounts.
The condition this weight assumes: About 87% water, with dissolved sugars and protein making up the rest — which is what puts it just above water in density.
The formula
ounces- The amount of whole milk you are converting, in ounces
0.116186570184- Cups per ounce for whole milk, from its density of 1.0313 g/mL
cups- The equivalent quantity in cups
How it works, step by step
- Enter the quantity in ounces.
- It is multiplied by 0.116186570184, the cups-per-ounce figure for whole milk.
- The result appears in cups, with a second reading in tbsp beneath it.
- Use the measure table if you want a standard recipe quantity rather than a number you type in.
Worked examples
2 oz of whole milk in cups
A recipe calling for 2 oz of whole milk needs 0.232373 cups on the scale. The arithmetic is 2 × 0.11618657 = 0.23237314, and halving the recipe halves the weight to 0.116187 cups.
4 oz of whole milk in cups
A recipe calling for 4 oz of whole milk needs 0.464746 cups on the scale. The arithmetic is 4 × 0.11618657 = 0.46474628, and halving the recipe halves the weight to 0.232373 cups.
12 oz of whole milk in cups
Take 12 oz of whole milk: 12 × 0.11618657 gives 1.39424 cups. Doubling the batch takes it to 2.78848 cups, because the relationship is a straight proportion once the density is known.
How to read your score
Frequently asked questions
How many cups are in 1 oz of whole milk?
One ounce of whole milk is 0.11618657 cups. Half that quantity is 0.0580933 cups and double it is 0.232373 cups, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of whole milk not 236 g like water?
Because weight per cup depends on what is in the cup. Whole milk has a density of 1.0313 g per mL where water has 1.00, so a cup of it weighs 244 g rather than 236.6 g. That is a difference of 7.4 g per cup, and it is the reason a single volume-to-weight factor cannot be applied to every ingredient.
Does how I measure it change the weight?
Barely. Whole milk does not compress, so a cup of it is 244 g however it is poured — within about 1%, which is inside the accuracy of a domestic scale. This is the group where measuring by volume is defensible.
Is a fluid ounce of whole milk the same as an ounce?
No. A fluid ounce is a volume — one eighth of a US cup, 29.57 mL — and an ounce is a weight. One fluid ounce of whole milk weighs 1.076 oz, so the two readings differ by 7.59%. They coincide only for something with the density of water, and then only roughly.
Is this a US cup or a metric cup?
US customary: 236.59 mL, which is the cup every US recipe means. A metric cup is 250 mL, so the same cup of whole milk would weigh 257.83 g instead of 244 g — 13.8 g more, or 5.67%. Australian and some European recipes use the metric cup, and the difference is large enough to matter in baking.
Do I need a scale for this, or will measuring cups do?
A scale, if the result matters. Volume measuring carries a spread of about 1% for whole milk — roughly 2.44 g on a 244 g cup — while a domestic scale is accurate to a gram or two. For anything where the ratio of ingredients drives the outcome, bread and pastry above all, weigh it.
How much does 2 cup of whole milk weigh?
2 cup of whole milk comes to 488 g, or 17.214 ounces. This page runs that calculation in reverse — enter a weight and it returns the volume — and the cups-to-ounces page does it in the direction the question is usually asked.
Whole milk in ounces and cups
| Ounces | Cups | Unrounded |
|---|---|---|
| 1/2 oz | 0.0580933 cup | 0.05809328509 |
| 1 oz | 0.116187 cup | 0.1161865702 |
| 2 oz | 0.232373 cup | 0.2323731404 |
| 3 oz | 0.34856 cup | 0.3485597106 |
| 4 oz | 0.464746 cup | 0.4647462807 |
| 6 oz | 0.697119 cup | 0.6971194211 |
| 8 oz | 0.929493 cup | 0.9294925615 |
| 12 oz | 1.39424 cup | 1.394238842 |
| 16 oz | 1.85899 cup | 1.858985123 |
Based on 244 g per cup of whole milk. One ounce of whole milk is 0.11618657 cups.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 244 g | 8.61 oz | 236.6 mL |
| 3/4 cup | 183 g | 6.46 oz | 177.4 mL |
| 2/3 cup | 162.7 g | 5.74 oz | 157.7 mL |
| 1/2 cup | 122 g | 4.3 oz | 118.3 mL |
| 1/3 cup | 81.33 g | 2.87 oz | 78.86 mL |
| 1/4 cup | 61 g | 2.15 oz | 59.15 mL |
| 1 tbsp | 15.25 g | 0.538 oz | 14.79 mL |
| 1 tsp | 5.083 g | 0.179 oz | 4.929 mL |
US customary measures: 1 cup = 236.59 mL, 1 tbsp = 14.79 mL, 1 tsp = 4.93 mL.
| Ingredient | Grams per cup | Ounces per cup | Density (g/mL) |
|---|---|---|---|
| Tahini | 240 g | 8.466 oz | 1.014 |
| Half-and-half | 242 g | 8.536 oz | 1.023 |
| Egg whites | 243 g | 8.572 oz | 1.027 |
| Whole milk (this page) | 244 g | 8.607 oz | 1.031 |
| Skim milk | 245 g | 8.642 oz | 1.036 |
| Buttermilk | 245 g | 8.642 oz | 1.036 |
| Plain yogurt | 245 g | 8.642 oz | 1.036 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.