How Many Cups Are in a Quart?

This conversion is most common when scaling a recipe up for a crowd — a soup or chili recipe written for 4 cups (1 quart) becomes straightforward to triple or quadruple using the recipe scaler once the quart-to-cup relationship is fixed, since no ingredient-specific density lookup is needed.

Canning and preserving recipes frequently specify jar sizes and liquid amounts in quarts, since standard Mason jars come in pint, quart, and half-gallon sizes — home canners converting a recipe to fit available jar sizes rely on this ratio constantly during batch preparation.

Restaurant and catering kitchens typically store and transport liquids like stock, sauce, and dressing in quart containers specifically because the quart-to-cup math is simple enough for kitchen staff to convert on the fly without needing a reference chart during service.

The US liquid quart is defined as exactly 4 US cups, or 946.35 milliliters, under measurement standards maintained by the National Institute of Standards and Technology (NIST) — a fixed volume-to-volume ratio with no ingredient dependency.

The US also maintains a separate 'dry quart' (about 1,101ml, used historically for produce like berries) distinct from the liquid quart used in cooking and beverage recipes — a source of confusion in older American recipes and farm-market packaging.

The UK imperial quart, still referenced in some older British recipes, equals about 1,137 milliliters, roughly 20% larger than the US liquid quart, per the UK Weights and Measures Act framework.

Because quarts and cups are both volume units, USDA FoodData Central does not need to publish an ingredient-specific conversion for this pair — unlike grams-to-cups, this ratio applies identically whether measuring stock, milk, or oil.

Large-format cooking equipment, including stockpots and slow cookers, is typically sized and marketed in quarts rather than cups precisely because quart figures stay simpler at scale — a 6-quart slow cooker is more intuitive to picture than a 24-cup one, even though the two numbers describe the identical capacity.

The metric equivalent used in most other countries is the liter, at roughly 1.057 US quarts — close enough that recipes converted casually between the two systems rarely need more than rounding, unlike the more consequential gram-to-cup gap for dry ingredients.