Pints to Cups Converter

US pints to US cups — quick reference

The formula, worked line by line

The conversion is a multiplication by two, and the two is a definition rather than a rounding. A US liquid pint is 16 fluid ounces and a US cup is 8, both derived from the same US liquid gallon of exactly 231 cubic inches. The ratio between them was declared, not measured.

That makes this one of the few kitchen conversions with no error term at all. Every complication on this page comes from the word pint naming three different units, not from any difficulty in the arithmetic between them.

cups = US liquid pints x 2
1 US pint = 16 fl oz - 1 US cup = 8 fl oz
1 pt -> 1 x 2 = 2 cups
2 pt = 1 quart - 8 pt = 1 gallon
imperial pint = 20 imperial fl oz = 2.402 US cups

The whole US liquid ladder in one line

Every step from the fluid ounce upward is a doubling or a quadrupling: 8 fl oz to the cup, 2 cups to the pint, 2 pints to the quart, 4 quarts to the gallon. Nothing in the chain requires division by an awkward number, which is why American recipes scale by eye so easily.

Where the metric system nearly lines up

A US pint is 473.18 millilitres, which is close to but not the same as a 500 millilitre bottle. The 500 millilitre bottle is 2.113 cups rather than 2. Going the other way, a bottle labelled 473 millilitres in a metric market is an American pint that has been converted and printed to the nearest millilitre.

How to use the pints to cups converter

A US liquid pint is 16 fluid ounces and a cup is 8, so a pint is exactly two cups. The conversion is a doubling and needs no rounding at all, because both units descend from the same fluid ounce and the ratio between them is a whole number by definition rather than by measurement.

That simplicity is why the pint survives in American recipes at all. It is the rung between the cup and the quart, useful for anything a recipe buys by the carton: cream, stock, buttermilk, ice cream. Two cups up, four cups to the quart, sixteen to the gallon.

Three answers to one question is unusual, and this is one of the few kitchen measures where it genuinely happens. The word pint on an American carton of cream and on an American punnet of blueberries refers to two different units, and neither is what a British recipe means by the same word.

For everything poured, the doubling holds and nothing else needs thinking about. A pint of stock is two cups. Half a pint is one cup, which is also 8 fluid ounces. Two pints make a quart and eight make a gallon, so the whole US liquid ladder is powers of two from the cup upward.

The pint of berries is a different unit

The United States kept two parallel volume systems, one for liquids and one for dry goods, and both use the words pint and quart. NIST Handbook 44 gives the dry pint as 33.6003125 cubic inches and the liquid pint as exactly 28.875, which makes the dry pint 16.36 percent larger.

Federal regulation recognises the split explicitly. The rules on container labelling require dry commodities to be expressed in terms of the US bushel and its peck, dry-quart and dry-pint subdivisions, and liquid containers in terms of the US gallon and its subdivisions. They are not interchangeable measures that happen to share a name.

In practice this rarely bites, because berries get used by the punnet and cream by the carton. It bites when a recipe gives a produce quantity in cups and a shopper has to work out how many punnets that is, which is exactly the case where the 16.36 percent gap is doing real work.

The British pint is a fifth larger

An imperial pint is 20 imperial fluid ounces where a US pint is 16 US ones. The imperial gallon is exactly 4.54609 litres against the US gallon of 3.785411784, and dividing each by eight gives 568.26 millilitres against 473.18. The imperial pint is 20.09 percent larger.

What makes this counterintuitive is that the imperial fluid ounce is the smaller of the two, at 28.41 millilitres against the US 29.57. The imperial pint is bigger despite having smaller ounces, because it contains twenty of them rather than sixteen. Most conversion tables state one fact and skip the other.

For cooking, the practical marker is the pint of cream or milk in a British recipe. Reading it as two American cups leaves you about four fluid ounces short, which is half a cup. Where a British recipe also gives a metric figure, that settles it immediately and no conversion is needed.

Every US pints value, worked out

36 common US pints figures each get their own page, with the answer at full precision, the arithmetic, what rounding costs, and the nearest real-world reference point on the scale.

Questions people ask