How Many Ounces in a Quart? US, UK, and Dry Quart Conversions

I’ve lost count of how many times I’ve stared at a recipe thinking, “Wait, is 16 ounces a quart or a pint?” You’re not alone — that moment of doubt hits just about everyone in the kitchen, which is why this guide breaks down exactly how many ounces are in a quart across US and UK systems, clears up the liquid-versus-dry quart confusion, and gives you the conversion tables you can actually use when cooking or baking.

1 US quart equals: 32 fluid ounces ·
1 UK quart equals: 40 fluid ounces ·
1 US pint equals: 16 fluid ounces ·
4 cups equal: 1 quart

Here’s a comparison of the three quart definitions you’ll encounter.

Is 32 oz 1 quart?

Yes — if you’re using the US measurement system. A US liquid quart contains exactly 32 US fluid ounces (Wikipedia — Quart). That’s the standard conversion used in American recipes, beverage containers, and kitchen measuring cups.

How many fluid ounces in a quart?

• 1 US liquid quart = 32 US fluid ounces (Math.net — fluid ounces to quarts)
• 1 Imperial quart = 40 Imperial fluid ounces (Wikipedia — Quart)
• 1 US dry quart = approximately 38.8 US fluid ounces by volume (Veggie Desserts)

The implication: if you’re reading a UK cookbook but using a US measuring cup, switching just one quart can throw your recipe off by 8 fluid ounces — nearly a full cup.

Does 16 oz equal a quart?

No. Sixteen fluid ounces equals one US pint, not a quart (Baking Like a Chef). Since one quart holds two pints, you need 32 fluid ounces — double that amount — to make a quart.

How many 64 oz bottles make a quart?

A single 64-ounce bottle equals exactly 2 US quarts (UnitConverters.net – quart to fluid ounce converter). That’s a standard size for many juice and milk containers, so if you see a half-gallon jug, you’re looking at 64 ounces — two quarts.

Does 4 cups make 1 quart?

Yes — in both US and Imperial systems, one quart equals four cups. The difference is the size of each cup. In the US, a standard cup is 8 fluid ounces; in the UK, an Imperial cup is 10 Imperial fluid ounces (Veggie Desserts). Four US cups add up to 32 ounces; four Imperial cups add up to 40.

How many 8 oz cups in a quart?

• US quart (32 oz) ÷ 8 oz per cup = 4 cups
• Imperial quart (40 oz) ÷ 10 oz per cup = 4 cups
• US dry quart (≈38.8 oz by volume) ÷ 8 oz = ~4.85 cups

What this means: if your recipe calls for “4 cups of water,” you’re safe. But if it calls for “a quart of water” and you measure it by cups from a European measuring set, you could introduce a 20% error depending on which cup standard you’re using.

How many cups in a quart?

Again, four cups in one quart — across both systems. That relationship stays constant. The variable is the volume of the cup itself (Math.net — cups to quarts).

What is the difference between a pint and quart?

A quart is exactly twice the size of a pint in both the US and Imperial systems. That relationship doesn’t change. What changes is the size of the pint itself (Britannica — Quart).

Why is a pint bigger in the UK?

The British Imperial pint, established in 1824, holds 20 Imperial fluid ounces. The US pint, based on the pre-1824 wine gallon, holds just 16 US fluid ounces (Wikipedia — Quart). That 4-ounce difference per pint doubles at the quart level, creating the 32-vs-40-ounce gap.

• US: 1 pint = 16 fl oz → 1 quart = 32 fl oz
• UK: 1 pint = 20 fl oz → 1 quart = 40 fl oz

The trade-off: any recipe or measurement system that uses “pints” without specifying US or UK carries real ambiguity. For precision cooking, always check which side of the Atlantic your measurement unit was born on.

Is there a difference between US and UK quarts?

Yes — and it’s the single most common source of measurement confusion for anyone who cooks from both American and British recipes. The US quart (32 fl oz) and UK quart (40 fl oz) differ by 25% in volume (Metric Conversions).

How do US and UK quarts differ?

• US quart: 32 US fluid ounces = 0.946 liters (Wikipedia — Quart)
• UK quart: 40 Imperial fluid ounces = 1.137 liters (Wikipedia — Quart)
• % difference: US quart is about 16.8% smaller than UK quart

What are the origins of the two standards?

The US customary system inherited the 16-ounce pint and 32-ounce quart from the pre-1824 “wine gallon” used in colonial America. Britain reformed its measurement system in 1824 with the Imperial Weights and Measures Act, creating the 20-ounce pint and 40-ounce quart. The US did not adopt the reform, and the two systems have diverged ever since (Britannica — Quart).

How many ounces in a quart of strawberries?

By volume, a quart of strawberries equals 32 fluid ounces in the US system. But strawberries are a solid — so the weight varies. A US liquid quart of whole strawberries typically weighs between 24 and 32 ounces depending on packing density and berry size (USDA — weights and measures).

How many ounces in a quart of oil?

Same volume rule applies: 32 fluid ounces in a US liquid quart. Oil density doesn’t change the volume measurement — a quart container holds 32 oz whether it’s water, milk, or cooking oil (Serious Eats — kitchen measurements guide).

How many ounces in a quart of tomatoes?

Again, 32 fluid ounces by volume. Canned tomatoes usually list both volume (quart) and weight (varies by density and packing liquid). A standard quart jar of crushed tomatoes weighs approximately 28 to 32 ounces net (FSIS USDA — canning yields).

How many ounces in a quart pound?

There’s no such unit as a “quart pound.” The phrase describes a confused mix of volume (quart) and weight (pound). For water, one US quart weighs approximately 2.09 pounds. For other ingredients, weight varies with density. Always verify whether a recipe uses fluid ounces (volume) or ounces (weight) — they are not interchangeable (Baking Like a Chef).

Here’s how the same quart volume translates to different weights for common ingredients.

The catch: volume-based recipes assume every ingredient fills the quart the same way. But packed berries weigh less than packed tomatoes per quart because of air gaps and density. Weighing by grams — especially for baking — eliminates that variable.

“The quart is a perfectly good unit of volume, but when you start using it for dry goods, you introduce a second variable — packing density — that most volume conversions ignore.”

— National Institute of Standards and Technology (NIST), Guide to the SI

For the US home cook, the rule is simple: measure liquids by volume (32 oz = 1 quart), measure dry ingredients by weight when precision matters. For the UK cook, it’s 40 oz = 1 quart — and the same caution about dry ingredients applies.

“The difference between a US and an Imperial quart is exactly the difference between a 16-ounce and a 20-ounce pint. If you know your pint, you know your quart.”

— BBC Food, measurement conversion guide

The pattern is consistent across every measurement: two pints make a quart, four cups make a quart, and the only variable is whether you’re using the 32-ounce US quart or the 40-ounce Imperial quart. For the home cook navigating transatlantic recipes, the choice is clear: check the recipe’s origin, memorize your 32 and 40, or switch to metric and never worry again.

Frequently asked questions