There are 4 quarts in a gallon of milk. Note that this measurement is the US standard. If you are using the UK and Imperial gallon, the number of quarts differs slightly. For the UK and Imperial gallon, the equivalent in quarts is 5.
Other than the UK and Imperial measurement differences, different countries have their quart to gallon conversion method. Some adopt the Imperial quart to a gallon for cooking measurements and the UK quart to gallon measurement for other things. Countries like Australia, Canada, and New Zealand adopted the US conversion measurement completely.
The gallon is the largest unit for measuring volume and it is used for liquids like milk. The short form of a gallon is a gal. It is essential to know the different conversions of quarts to gallon.
Milk is a household item that you can hardly do without. Knowing how to convert from quart to gallon would help you in your shopping at supermarkets and shops. For instance, you know that while the US measurement gallon would only give you four quarts, you can get up to six quarts in a UK gallon of milk.