For those outside the US, like me:

26oz ≈ 769mL

32oz ≈ 946mL

44oz ≈ 1301mL

64oz ≈ 1893mL

128oz ≈ 3785mL

In America, are these labelled as multiple servings? Even a 500mL bottle of cola in Europe is labelled as two 250mL servings.

These cups are not usually labeled with serving information. They don't, for example, have how many calories are in them because they can be filled with a variety of different sodas (some zero calorie).

FWIW, from my perception, the 128 oz is very rare, 64 oz is fairly common but a small percent of sales, and 44 oz is very common. (edit: these are for convenience stores like 7-11, not restaurants etc where sizes are much smaller)

wow ... do we have 1+ litre servings here in UK? Maybe at the cinema or something?

Most common serving size here might be a pint, which is about half a litre, I guess.

One factor that I've noticed is that Americans love ice much more than Europeans. It's not uncommon for them to fill a cup with ice almost to the rim and then add the soda. It would be interesting to see how much actual soda most people put in those 1+ litre ups.

I've seen calorie counts posted on soda fountains. If I recall correctly the fine print says that they figure one-third ice.

In case it wasn't clear, the sizes/frequency I was referring to is in convenience stores like 7-11, not restaurants etc.

Ah, sorry. If you're talking about bottles, then yeah, 1~3 litres are normal here too. Single servings are either a can (330ml) or a small bottle (~500ml).

Unfortunately it's not a bottle. It's just a plastic cup with a lid and a straw. A really big plastic cup that tapers at the bottom so you can fit it in your vehicle's cupholder.

In USA even the cups have muffin-tops!?

Yep. Horrific, isn't it?

This is humorous but really not a useful or appropriate analogy for alocohol consumption. That is more about diabetes than alocoholism.

A bottle of wine is less than 26 oz. So the wineries need to catch up.

There are larger wine bottles: magnum, double magnum, jeroboam, ...

http://www.wrathofgrapes.com/bottles.html