The quart (US) is a unit of liquid volume in the U.S. customary system, equal to 32 US fluid ounces or approximately 946.353 milliliters. It's abbreviated as qt and is defined as one-fourth of a US gallon. A quart is also twice the size of a US pint and one-eighth of a gallon, making it a convenient middle-range measurement for recipes, packaging, and household use.
In American kitchens, the quart is commonly used for liquids like milk, broth, juice, and cooking oils. It's a standard size for measuring cups and storage containers and is widely seen in both home cooking and grocery products.
Uses: The US quart is frequently used in recipes that call for larger volumes of liquid soups, stews, stocks, and marinades. It's also a common reference point for batch cooking and food storage. Many kitchen containers and measuring pitchers are marked in quarts, making it easy for home cooks to portion ingredients accurately.
Outside the kitchen, quarts are used in food and beverage packaging, such as milk cartons, ice cream tubs, and juice bottles. The unit also appears in automotive contexts, where motor oil is sold in quarts. Thanks to its versatility and widespread recognition, the quart continues to be a trusted unit in both culinary and everyday settings.
The imperial gallon is a unit of volume used in the imperial measurement system, and it is historically common in the United Kingdom and several other countries. One imperial gallon is equal to 4.54609 liters, which makes it significantly larger than the US gallon (approximately 3.785 liters). It is abbreviated as gal and traditionally used for measuring liquids in larger quantities.
In the imperial system, a gallon is made up of four quarts, eight pints, or 160 imperial fluid ounces. Though the UK has officially adopted the metric system, the imperial gallon is still recognized in specific contexts and remains part of British measurement history. It's most commonly associated with fuel pricing and older food or drink packaging.
Uses: The imperial gallon is most commonly seen today at fuel stations in the UK, where petrol and diesel are still sold by the gallon for pricing comparisons, even though the actual quantity delivered is measured in liters. Historically, the gallon was used for everything from milk deliveries to beer and cider sales.
While modern recipes and packaging have largely shifted to liters and milliliters, the imperial gallon occasionally appears in traditional instructions or product specs, especially for bulk liquids. For those referencing older materials or converting classic measurements, the imperial gallon remains a useful and historically significant unit.
1 qt = 0.208169 gal (imp)
Let’s say you want to convert 100 qt to gal (imp).
Using the formula:
100 × 0.208169 = 20.817 gal (imp)
So, 100 qt is approximately 20.817 gal (imp).
| Quart (US) (qt) | Gallon (Imperial) (gal (imp)) |
|---|---|
| 1 qt | 0.208 gal (imp) |
| 2 qt | 0.416 gal (imp) |
| 3 qt | 0.625 gal (imp) |
| 4 qt | 0.833 gal (imp) |
| 5 qt | 1.041 gal (imp) |
| 6 qt | 1.249 gal (imp) |
| 7 qt | 1.457 gal (imp) |
| 8 qt | 1.665 gal (imp) |
| 9 qt | 1.874 gal (imp) |
| 10 qt | 2.082 gal (imp) |
| 11 qt | 2.29 gal (imp) |
| 12 qt | 2.498 gal (imp) |
| 13 qt | 2.706 gal (imp) |
| 14 qt | 2.914 gal (imp) |
| 15 qt | 3.123 gal (imp) |