[1][2][3] The following information is describing that how to measure US legal cup in different ways.

[10] Further, there are two related British culinary measurement units of volume without the word, ‘cup’, in their names: the tumbler (10 imperial fluid ounces)[9][12] and the wine glass (2 imperial fluid ounces).

British cookery books and recipes, especially those from the days before the UK's partial metrication, commonly use two or more of the aforesaid units simultaneously: for example, the same recipe may call for a ‘tumblerful’ of one ingredient and a ‘wineglassful’ of another one; or a ‘breakfastcupful’ or ‘cupful’ of one ingredient, a ‘teacupful’ of a second one, and a ‘coffeecupful’ of a third one.

Similar units in other languages and cultures are sometimes translated "cup", usually with various values around 1⁄5 to 1⁄4 of a litre.

The traditional Japanese unit equated with a "cup" size is the gō, legally equated with ⁠2,401/13,310⁠ litre (≈ 180.4 ml/6.35 British imperial fluid ounces/6.1 US customary fluid ounces) in 1891, and is still used for reckoning amounts of rice and sake.

In Europe, recipes normally weigh non-liquid ingredients in grams rather than measuring volume.

Many European measuring cups have markings that indicate the weight of common ingredients for a given volume.