Question: how many fluid ounces in a martini glass?
Answer: A standard cocktail glass contains 90 to 300 millilitres (3 to 10 US fl oz), though originally they were around 120 millilitres (4 US fl oz) in size. Oversized cocktail glasses, ranging in capacity from 180 ml (6 US fl oz) to large glasses of 350 ml (12 US fl oz) or more are available.