A quart carton of half-and-half holds 4 cups. A US quart is 32 fluid ounces, and since 1 cup is 8 fluid ounces, the conversion is exact: 32 divided by 8 is 4. Half-and-half is a liquid, so the volume conversion is reliable no matter which brand you buy — a quart is a quart. By weight, a quart is about 946 ml, and at the USDA figure of 242 g per cup, 4 cups weigh about 968 g. The small difference between the millilitre figure and the gram figure is the density of the cream: half-and-half is slightly denser than water, because it is half milk and half cream.
Half-and-half sits between milk and cream, and that is exactly why it is useful: it enriches coffee, sauces and soups without the heaviness of cream, and it is the standard dairy for quiche, creamy pasta and many baked custards. Recipes measure it in cups while shops sell it by the quart, and the 4-cup figure is the bridge. A quiche calling for 1 1/2 cups uses a little more than a third of the carton; a soup calling for 2 cups uses half; a creamy pasta for six calling for 3 cups uses three quarters. Knowing the carton is 4 cups lets you buy the right size the first time — and tells you when the pint carton, which holds 2 cups, is the smarter buy.
Carton of half-and-half conversion table
The table below breaks a quart carton into fractions, with tablespoons and fluid ounces alongside. Half-and-half is a liquid, so the volume fractions are exact.
| Amount | Cups (approx.) | Tablespoons | Fluid ounces |
|---|---|---|---|
| 1/4 container | 1.00 cups | 16.0 tbsp | 8.0 fl oz |
| 1/2 container | 2.00 cups | 32.0 tbsp | 16.0 fl oz |
| 3/4 container | 3.00 cups | 48.0 tbsp | 24.0 fl oz |
| Full container | 4.00 cups | 64.0 tbsp | 32.0 fl oz |
| 2 containers | 8.00 cups | 128.0 tbsp | 64.0 fl oz |
By weight, 1 cup of half-and-half is about 242 g (USDA), so a full quart carton is about 968 g. A quart is 946 ml by volume — the gram figure is slightly higher because half-and-half is denser than water.
Worked examples
A quiche for six
A quiche for six people uses 1 1/2 cups of half-and-half whisked with three eggs, salt, pepper and a pinch of nutmeg, then poured over grated cheese and fillings in a pastry case. That is a little more than a third of a quart carton. The half-and-half gives the custard a rich, creamy set without the heaviness of cream, and it is less likely to curdle than milk. Bake at 190°C for 30 to 35 minutes until the centre barely wobbles. The remaining 2 1/2 cups will keep for a few days in the fridge and are enough for a creamy soup or a second quiche.
Creamy tomato soup for four
A creamy tomato soup for four people uses 1 cup of half-and-half stirred in at the end, which is a quarter of a quart carton. It gives the soup a silky body without the fat of heavy cream. Stir it in off the heat and do not let the soup boil afterwards — half-and-half is more likely to split than heavy cream, especially in an acidic tomato soup. If the soup does split slightly, a quick blitz with a stick blender usually brings it back together. Keep the remaining 3 cups for coffee, a pasta sauce, or a second batch of soup.
Coffee for a crowd
A brunch for ten people goes through a surprising amount of half-and-half in coffee — about 2 tablespoons per cup of coffee, which is 1/4 cup per person if everyone has two cups. For ten people that is about 2 1/2 cups, or five eighths of a quart carton. Put the carton on the table and let people help themselves rather than trying to measure it out. A quart carton is the right size for a brunch; a pint carton, which holds 2 cups, would run out halfway through.
How the figure is worked out
Think of the answer as a conversion, not a measurement. The package weight is a quart carton of half-and-half. One cup of this ingredient weighs a known number of grams, so the cups in the package are the package weight divided by the cup weight. The method matters as much as the number: a spooned and levelled cup is the standard, and a scooped cup packs in more, which is why two bakers can get different cup counts from the same bag. The cup weight used here is 242 g per cup, poured, sourced from USDA.
Practical guidance
Half-and-half is half milk and half cream, and that blend is what makes it both useful and fragile. It is rich enough to give body to a sauce, but it does not have enough fat to whip, and it splits more easily than heavy cream when it is boiled or mixed with acid. When a recipe calls for half-and-half in a hot dish, add it at the end and keep the heat low. If a recipe calls for heavy cream and you only have half-and-half, the result will be thinner and less stable — it works in a soup, but not in a whipped topping or a rich custard that needs to set firmly.
A quart carton of half-and-half keeps for about a week after opening if refrigerated and sealed, but always check the date on the carton and trust your nose. Do not freeze half-and-half you plan to use in coffee — freezing makes it separate and grainy. Frozen half-and-half is only usable in cooked dishes, where the separation is hidden. If you use half-and-half mostly in coffee, buy the pint carton instead: it holds 2 cups, costs less, and you will finish it before it goes off. The quart is the right buy when you are cooking with it in quantity.
Frequently asked questions
How many cups are in a pint of half-and-half?
2 cups. A US pint is 16 fluid ounces and a cup is 8 fluid ounces, so a pint is exactly 2 cups. A quart is twice a pint, which is why a quart carton holds 4 cups. If your recipe needs 2 cups or less, a pint carton is the right size.
How many grams are in a quart of half-and-half?
About 968 g, using the USDA figure of 242 g per cup. A quart is 946 ml by volume — the gram figure is slightly higher because half-and-half is denser than water. Treat the gram figure as approximate and weigh the half-and-half yourself if the recipe depends on it.
Can I use milk instead of half-and-half?
Yes, in most cooked dishes, but the result will be thinner and less rich. In coffee the difference is noticeable — milk does not give the same creamy body. In a sauce or a soup, milk works fine if you do not mind a lighter result. For a quiche or a custard, milk is more likely to curdle, so half-and-half is the better choice.
Will half-and-half whip?
No. Half-and-half does not have enough fat to whip and hold its shape — only heavy cream does that. If you try to whip half-and-half, it will foam briefly and then collapse. Use it for pouring and cooking, not for whipping.
How long does an opened carton of half-and-half keep?
About a week in the fridge, sealed, if it was fresh when opened — but always check the date on the carton. Discard it if it smells sour or off. Do not freeze it for use in coffee; frozen half-and-half separates and turns grainy.