A pitcher’s capacity is determined by its size as well as the size of the glass into which the beer is being poured. Standard beer pitchers come in sizes ranging from 48 to 60 fluid ounces, with some going as low as 32 ounces.
A typical beer pitcher would produce three to four pint glasses of beer because a pint glass carries 16 fluid ounces of beer. If a glass is just 12 ounces of liquid, a typical beer pitcher might make up to five glasses of beer. When calculating how many beers are in a pitcher, it is advised that the person understands both the fluid ounces of the pitcher and the glass size in ounces.