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.
A milliliter is a metric unit of volume used around the world for measuring small amounts of liquid. It's abbreviated as mL and is defined as one-thousandth of a liter—making it ideal for precise, everyday measurements. One milliliter is equal to 1 cubic centimeter (cm³) and roughly 0.034 fluid ounces (US).
Because of its precision and simplicity, the milliliter is a standard in science, medicine, cooking, and packaging. Whether you're reading a nutrition label, following a recipe, or measuring out a medication dose, the milliliter is a practical and widely accepted unit in both personal and professional settings.
Uses: The milliliter is used globally in a wide range of applications. In the kitchen, it helps measure small liquid quantities like vanilla extract, lemon juice, or oil. On food packaging, beverages, and household products, you'll often see volumes listed in milliliters to indicate serving sizes or total content.
In healthcare, the milliliter is critical for accurately dosing liquid medications, especially in syringes and measuring cups. The milliliter is often seen in labs and industries where accurate volume is expected. It’s also used on packaging, recipe cards, and medicine labels to keep measurements clear and consistent in everyday use.
1 fl oz (imp) = 28.4131 mL
Let’s say you want to convert 100 fl oz (imp) to mL.
Using the formula:
100 × 28.4131 = 2841.31 mL
So, 100 fl oz (imp) is approximately 2841.31 mL.
| Fluid Ounce (Imperial) (fl oz (imp)) | Milliliter (mL) |
|---|---|
| 1 fl oz (imp) | 28.413 mL |
| 2 fl oz (imp) | 56.826 mL |
| 3 fl oz (imp) | 85.239 mL |
| 4 fl oz (imp) | 113.652 mL |
| 5 fl oz (imp) | 142.066 mL |
| 6 fl oz (imp) | 170.479 mL |
| 7 fl oz (imp) | 198.892 mL |
| 8 fl oz (imp) | 227.305 mL |
| 9 fl oz (imp) | 255.718 mL |
| 10 fl oz (imp) | 284.131 mL |
| 11 fl oz (imp) | 312.544 mL |
| 12 fl oz (imp) | 340.957 mL |
| 13 fl oz (imp) | 369.37 mL |
| 14 fl oz (imp) | 397.783 mL |
| 15 fl oz (imp) | 426.197 mL |