The imperial fluid ounce is a unit of volume from the imperial measurement system, traditionally used in the United Kingdom and other Commonwealth countries. One imperial fluid ounce is equal to 28.4131 milliliters, which makes it slightly larger than the US fluid ounce (approximately 29.57 mL in the US system). It's commonly abbreviated as fl oz and was widely used for measuring liquids in recipes, packaging, and day-to-day household tasks.
Uses: The imperial fluid ounce was once a standard unit in British kitchens, used to measure ingredients such as milk, oil, and other cooking liquids. While most modern recipes in the UK now use milliliters or grams, many older or traditional recipes still list quantities in fluid ounces. This makes the unit especially relevant for those cooking from classic British cookbooks or following long-standing family recipes.
The imperial fluid ounce still appears on many UK labels, especially for drinks, personal care products, and older medicinal packaging. Whether you're following a traditional recipe or measuring from labeled packaging, knowing how this unit works helps you convert accurately and maintain consistency.
The imperial quart is a unit of volume from the imperial system, primarily used in the United Kingdom and some Commonwealth countries. One imperial quart equals 1.13652 liters or 40 imperial fluid ounces, making it larger than the US quart, which holds about 946 milliliters. It's abbreviated as qt and traditionally used to measure liquids and dry goods in household and commercial settings.
In the imperial system, a quart is equal to one-fourth of a gallon and twice the volume of a pint. Though metric units have largely replaced imperial measures in the UK, the quart still appears in older recipes, cooking references, and some product labels—especially in contexts where traditional measurements remain familiar and practical.
Uses: The imperial quart is often seen in vintage British recipes, where it's used to measure liquids like broth, milk, or cream. It also shows up in older cookbooks, measuring jugs, and kitchenware that still use imperial markings. While not as common in everyday packaging today, you might still encounter quarts in contexts like traditional food preparation or when referencing older British standards.
1 fl oz (imp) = 0.025 qt (imp)
Let’s say you want to convert 100 fl oz (imp) to qt (imp).
Using the formula:
100 × 0.025 = 2.5 qt (imp)
So, 100 fl oz (imp) is approximately 2.5 qt (imp).
| Fluid Ounce (Imperial) (fl oz (imp)) | Quart (Imperial) (qt (imp)) |
|---|---|
| 1 fl oz (imp) | 0.025 qt (imp) |
| 2 fl oz (imp) | 0.05 qt (imp) |
| 3 fl oz (imp) | 0.075 qt (imp) |
| 4 fl oz (imp) | 0.1 qt (imp) |
| 5 fl oz (imp) | 0.125 qt (imp) |
| 6 fl oz (imp) | 0.15 qt (imp) |
| 7 fl oz (imp) | 0.175 qt (imp) |
| 8 fl oz (imp) | 0.2 qt (imp) |
| 9 fl oz (imp) | 0.225 qt (imp) |
| 10 fl oz (imp) | 0.25 qt (imp) |
| 11 fl oz (imp) | 0.275 qt (imp) |
| 12 fl oz (imp) | 0.3 qt (imp) |
| 13 fl oz (imp) | 0.325 qt (imp) |
| 14 fl oz (imp) | 0.35 qt (imp) |
| 15 fl oz (imp) | 0.375 qt (imp) |